Selena Gomez has dumped Justin Bieber over his friendship with Kylie Jenner.
The 'Come and Get It' hitmaker - who was seen cuddling up to her on/off boyfriend at the Coachella Valley Music and Arts festival earlier this month - is said to have been infuriated by the 'Boyfriend' hitmaker's closeness to the reality TV star, despite them hanging out as a group, along with Kylie's sister Kendall, at the Californian event.
A source said: "Selena is convinced something has gone on between Justin and Kylie.
"At Coachella they looked to be back on track. Selena was hanging out with Kylie too and they were behaving like best friends.
"Then she heard stuff about Justin and Kylie and felt totally betrayed. She went berserk and called it all off again."
The 21-year-old star is said to be "overcome" with jealousy and has unfollowed the Jenner sisters on Instagram and deleted all her pictures with the pair.
However, friends think she is channeling her emotions in the wrong place and want her to focus on cutting Justin out of her life.
The source added to The Sun newspaper: "Selena is in a really bad place at the moment -- she's on the edge and now overcome with jealousy.
"She really needs to wash her hands of Justin for good."
It was recently claimed that friends are worried about Selena - whose underwent a brief stint in rehab in January as they think she behaves "like a different person" when she is with the 'Beauty and a Beat' star and they don't think she should have resumed their three-year on/off romance again.
A source said: "Selena is now acting a little brainwashed and not challenging a thing Justin says. There was a time not long ago where they were fighting and arguing about their relationship, but now she's like a robot and completely in his thrall.
"Whatever he did to keep her from moving on from the relationship worked a little bit too well, because it's like she's a completely different person."

Beyonce is featured on a new song called 'Dreams'.
The 'Drunk in Love' hitmaker has lent her vocals to a new track from producer-and-singer Boots, who worked on much of her recently released self-titled fifth studio album.
The soothing song features back-up vocals from the 32-year-old singer, as well as a verse in which Beyonce sings, "Baby, we've got a lot of love to give, so standby."
Little-known Boots - real name Jordy Asher - has gushed about his collaboration with Beyonce, calling it the "greatest cosign in the world".
He explained to Vogue: "I love that the song has me and what I'm doing in my realm and her and what she's doing in hers, and it's so completely opposite but they work incredibly together.
"It's just a really cool testament to our friendship and relationship to do something like this, and as natural as it was for it to exist in the way that it's going to exist. I feel like I've been given my wings to fly. It's the greatest kind of cosign you could get, from someone who truly, truly believes in you. As gifted and as brilliant as she is, and she is, to be able to believe in me in that regard is a really special thing."
Boots was signed by Beyonce's husband's record label, Roc Nation, in June 2013 and has previously claimed he produced 85 per cent of her smash hit album 'BEYONCE', which was released in December.

Blockbuster screenwriting duo Alex Kurtzman and Roberto Orci have split up.
The writing team behind smash hit films such as the rebooted 'Star Trek' franchise and 'The Amazing Spider-Man 2' have called it quits to concentrate on individual projects.
According to The Hollywood Reporter, the split is "amicable" but has been "brewing" for some time as both try to set up their own directing careers.
Variety reports that Orci is eager to helm 'Star Trek 3', which is without a director as J.J. Abrams has switched to the 'Star Wars' franchise, but Paramount Pictures is wary of hiring him, as he has never directed a movie before.
Meanwhile, Kurtzman has already been hired by Sony Pictures to helm 'Amazing Spider-Man' spin-off film, 'Venom', which he will also co-write.
Orci and Kurtzman scripted the second 'Amazing Spider-Man' film with Jeff Pinkner and are already writing the third.
The high school friends first began writing together on TV series 'Hercules: The Legendary Journeys', before working with close pal J.J. Abrams on Jennifer Garner-starring thriller show, 'Alias'.
The pair wrote the first two 'Transformers' movies and 'Mission: Impossible III'.
They are also credited as producers on the 'Star Trek' films and magic film 'Now You See Me'.

Mario Falcone would quit 'The Only Way Is Essex' for Lucy Mecklenburgh.
The reality TV star - who was catapulted to the spotlight on the reality TV show alongside his ex-fiancée who he split from last summer - believes the pair share a connection which cannot be replicated and believes it could be easier for them to have a relationship if they were to rekindle their romance away from the cameras.
He explained to Now magazine: "I've said to the girl (Lucy) I'd happily leave 'TOWIE' tomorrow if she says she wants to give it another go and get back together with me. She's always saying she's scared and unsure because I keep getting seen with other girls, but I don't understand what I'm meant to do. She's saying she doesn't want to be with me or speak to me again, then she gets in contact. I'm meant to be waiting for her and proved I've changed, but at the same time I'm not allowed to talk to anyone else and she doesn't want to be with me? It's just a very confusing situation."
Mario is convinced if their lives hadn't played out on camera things might not have ended between them, despite his infidelities with several girls and Lucy's one-off fling.
Talking about quitting the show, he added: "[If I quit we] can be a normal couple. When you go home and close the door, whatever happens behind closed doors is private and for you two only, not millions of people. It makes things easier."
Mario previously claimed he thinks he and Lucy are still drawn to each other because they can't help but be "curious" as to what would happen if they gave their relationship another shot.

Binky Felstead initially thought Alex Mytton was a loser.
The 'Made in Chelsea' beauty is currently going through a turbulent period in her relationship with Alex - who she stars with on the reality show - and has now revealed she wasn't instantly impressed by the hunk and never anticipated developing feelings for him.
She told new! magazine: "I thought he was a bit of a loser, to be honest, but he wooed me."
The pair's relationship has been rocked by claims Alex cheated on Binky - real name Alexandra Felstead - but she still believes in their love and thinks everything that happens in a relationship has a purpose.
Binky explained: "I believe people are in your life for a reason. I also believe we'll all end up with somebody, even if it takes time to get there. I do believe in love, but what's meant to be is meant to be.
"I don't believe in regret. Things happen for a reason, and it was fun. You can't help who you like."
Binky admits she hasn't enjoyed much of the current series - which has focused on rumours of Alex's infidelity - but she knew allowing her relationship to be filmed would have many difficulties.
She said: "It's not that amazing, but you've got to bear it. Having a relationship on the show is going to be difficult, but people are being so lovely and supportive."

Mariah Carey has booked an entire airplane cabin for £70,000.
The 'Art of Letting Go' singer is insistent on travelling in style and has ordered her aides to book the entire first class cabin on a British Airways flight when she goes to Cannes Film Festival next month.
The 44-year-old star will travel from New York to Nice, France, for a hefty five-figure sum so other passengers don't bother her during the flight.
A source told The Sun newspaper: "Over the years Mariah has grown accustomed to travelling in ultimate style so she doesn't think twice about paying such a crazy amount to ensure her privacy.
"At least she'll be able to stock up on the missing passengers' complimentary eye masks and hot towels.
"Let's hope she doesn't demand that British Airways lays out fluffy carpets for her, kits out the upper deck with puppies and paints the interiors cream. To be honest, it would be cheaper for Mariah to just hire her own private jet."
Mariah - who has two-year-old twins, Moroccan and Monroe, with husband Nick Cannon - is no stranger to diva demands.
In 2005, she famously requested a London hotel roll out a red carpet lined with candles for her late night arrival and refused to get out of her limousine until staff had done so.

Jay Z and Beyonce have bought a £5.5 million home in London.
The superstar couple have reportedly splashed out on a luxury detached townhouse in west London, having looked for properties in the trendy Mayfair area and outside of London in the Cotswolds.
The deal is thought to have closed on their new home four weeks ago.
A source told the Daily Mirror newspaper: "Both Jay and Beyonce are Anglophiles and have been toying with the idea of getting a pad for a couple of years now.
"On previous trips, they have stayed in five star hotels and, on one occasion, a rented mansion. While money isn't an issue, it makes sense for them to have a more permanent base and get to know one particular area."
A home in London would also make sense as the couple are rumoured to be performing on a joint tour that would arrive in Britain later this year.
The source added: "They are coming to England this year and touring before the year is out."
Jay, 44, and Beyonce, 32, appeared to enjoy themselves in the British capital earlier this year when Beyonce performed several sold-out concerts at The O2 arena.
The couple - who have a two-year-old daughter, Blue Ivy - were regularly seen out and about, visiting the trendy Arts Club in Soho and indulging in unusual cocktails at the quirky White Lyan pub in Hoxton, east London.
The 'Drunk in Love' hitmakers currently reside in Jay's native New York when they're not travelling the world.

Nicki Minaj is going back to her hip hop roots for her new album.
The 'Starships' rapper claims her latest material will be nothing like previous offerings and she wants to surprise fans with a different sound on her latest album 'The Pink Print'.
She told MTV News: "The tracks on 'Pink Print' are back to my hip-hop roots. I don't think it's something that I'm necessarily trying to do [go in a new direction]. It's like as soon as I started working on my new album, that's just the songs that I've been writing."
The brunette star, who recently released new songs 'Lookin' Ass' and 'Chi-Raq', claims she's
"super excited" to drop another new track in coming weeks.
Asked if the new song will sound like 'Super Bass', she replied: "Hell no."
Discussing the new material, Nicki insists: "I'm just gonna do what my heart tells me to do."
The artist is also promoting her new film 'The Other Woman', starring Cameron Diaz, and has a new natural look, after deciding to ditch wacky outfits and hairdos.
She explained: "You can either continue doing costumes or you can just say, 'Hey guess what? This will shock them even more. Doing nothing will shock them even more... I really kind of let things happened gradually."

Cameron Diaz is organising a girls' holiday to help Gwyneth Paltrow get over her marriage split.
The 'Other Woman' actress is keen to cheer up her friend following the end of her 10-year marriage to Chris Martin and is enlisting several of their mutual friends to whisk her away for a relaxing break.
A source said: "Cameron is currently rallying the troops. She wants Reese Witherspoon, Gucci Westman and Jennifer Aniston, although she's filming a lot.
"She wants them just to relax, have fun and make Gwyneth laugh. They're currently talking about the Italian Riviera."
As well as Cameron, the 'Iron Man 3' actress has relied a lot on 'Horrible Bosses' star Jennifer during her marriage troubles, and regularly stayed with her pal before she and Chris split for good.
A source told Grazia magazine: "Jen's known about their marriage problems for a long time. And ever since they announced their split she has been on the end of a phone round the clock offering support and guidance.
"She was also instrumental in helping Gwyneth while she and Chris were deciding whether to end things.
"It was great for Gwyneth to escape [to Jen's] when she and Chris needed time apart. And in the past few weeks, since returning from holiday, she has also spent nights at Jen's. It's nice for Jen to have the company too, as her fiance Justin [Theroux] is away in New York. After filming her movie 'Cake'. Jen heads back and they sit on the veranda and drink wine."

Katie Price prefers the "completely pruned look downstairs".
The former glamour model - who has eight-month-old son Jett with husband, Kieran Hayler and three kids, Princess, six, Junior, eight, and Harvey, 11, from previous relationships - has been reading Cameron Diaz's novel 'Body Book', and believes intimate grooming is "common", while she favours removing all her pubic hear.
In her column for Now magazine, Katie, 35, wrote: "Did you know Cameron Diaz is into topiary? In her 'Body Book', she admits she's a fan of her lady bits, especially the 'lovely curtain of public hair that surrounds [her] glorious, delicate flower!' Grooming 'down there' is now common - more and more women trim their, er, downstairs garden.
"Personally, I prefer the completely pruned look, if you know what I mean."
Katie also supports women who work hard by exercising and eat healthy to maintain their figure.
She added: "Total credit to any woman who works hard and has the discipline to eat healthily and exercise, but us girls will only ever be happy once we reach our comfortable weight. Some go too far and look too skinny, which isn't attractive, so it should be all about balance."

Salma Hayek and Francois-Henri Pinault could reportedly be sued for a fatal car crash.
The 'Frida' star's younger brother, Sami Hayek, was driving a Ford GT when he allegedly lost control of the vehicle and smashed into a truck, killing his passenger Grammy Award-winning art director Ian Cuttler Sala in Bel Air, California in February.
And according to gossip website TMZ.com the brunette beauty, 47, and Francois, 51, could be sued by the victim's family under California law, as they are the registered owners of the vehicle.
Meanwhile, police officers are thinking about referring the case against Sami to the District Attorney for a possible felony vehicular manslaughter prosecution.
They secured a search warrant to look for a device called an RCM (Restraint Control Module) in the car, which they believe could help them confirm allegations by eyewitnesses that Sami lost control because he was speeding and hit the truck coming in the opposite direction.
Beyoncé Knowles paid tribute to her former colleague Ian, shortly after he was identified as the victim killed in the accident.
The 32-year-old singer wrote on her Facebook page: "Rest in Peace Ian Cuttler. Ian was a Grammy Award winning art director and photographer who will be greatly missed. His memorable work includes album covers for 'Destiny Fulfilled' and 'Dangerously in Love.' "

Jon Hamm has branded Justin Bieber a "sh**head."
The 'Mad Men' star thinks the 20-year-old singer - who is facing charges for Driving Under the Influence (DUI), resisting arrest and possessing an invalid driver's licence in Miami in January - needs a reality check and should learn "basic life skills" so fame doesn't ruin his life.
The 43-year-old actor told the May issue of Men's Fitness magazine: "Look at Bieber or whoever. You're like, 'What the f**k, man? What are you doing? Why?' There's no one telling those people no, and it's a shame."
The Golden Globe-winning actor said that Justin needs "a mom or a dad or a really good friend who can say, 'Hey, sh**head!' "
He added: "You see people in the world and you're like, 'Do you know how a washing machine works? Do you know how to wash a dish?' Life skills are something we're missing... just s**t you needed to learn in life. There used to be a class that kids had to take in high school called home economics, which was cooking and sewing and just s**t you needed to learn in life."
Jon previously lashed out at reality stars, including Kim Kardashian and Paris Hilton, for being famous for "being a f**king idiot" in 2012.
He said: "Whether it's Paris Hilton or Kim Kardashian or whoever, stupidity is certainly celebrated. Being a f**king idiot is a valuable commodity in this culture because you're rewarded significantly. It's celebrated. It doesn't make sense to me."