Little Mix's Jade Thirlwall and Jesy Nelson have split from their boyfriends.
The pair - who make up half of the 'X Factor' winning girl group - were both dating members of 'Britain's Got Talent' dance troupe Diversity but are said to have ended their relationships because of their hectic schedules.
A source close to the 'Salute' hitmakers told the Daily Mirror newspaper: "It happened very recently for both couples."
Jade, 21, had been dating Sam Craske since 2011 while Jesy, 23, had been dating Diversity leader Ashley Banjo's younger brother Jordan at around the same time, although they previously split in March last year before getting back together.
The source added: "While it's strange timing and quite a coincidence that both girls were dating boys in the same dance troupe, it seems to have stemmed from the amount of time they are able to spend together, because of their conflicting schedules.
"The girls are about to go on a huge US tour, which will see them spend the entire rest of the summer apart.
"That's tough for any relationship, but especially when the girls are still so young."
Meanwhile, Jesy and Jade's bandmates Perrie Edwards, 20, and Leigh-Anne Pinnock, 22, are still going strong with their partners, as Perrie is engaged to One Direction heartthrob Zayn Malik and Leigh-Anne is still dating soccer player Jordan Kiffin.

Cara Delevingne is eager for a role in the new 'Star Wars' film.
The model and budding actress is said to be a fan of the popular sci-fi saga and has pressed her actor pal Domhnall Gleeson - who is to star in the new installments of the franchise - to put in a good word for her.
A source told the Daily Star newspaper: "Cara is a huge fan of 'Star Wars'. She became very envious when she heard the unknown actress Daisy Ridley had managed to land a role.
"But there are still plenty of parts yet to be cast, as Domhnall has assured her, and she's desperate for one - no matter how small."
The 21-year-old beauty has been boosting her acting career over the last year with roles in TV drama 'Timeless' and British film 'Kids in Love', which also stars BAFTA winner Will Poulter.
The celebrated fashion darling recently admitted she is scaling back on her modelling career - which includes lucrative deals with Mulberry and DKNY - to concentrate on her film career.
She said: "Acting is all I've ever wanted to do, so I'm living the dream. I prefer acting to modelling. Modelling is where I started and I could never turn my back on it because without it I wouldn't be here, but this is what I love. This is it for me."

Lana Del Rey is dating an Italian photographer.
The 'Young and Beautiful' hitmaker - who recently announced she had split from boyfriend Barrie-James O'Neill - has been spotted with Vogue photographer Francesco Carrozzini on dates in both Los Angeles and New York this month, and insiders claim the new romance is already getting serious.
A source told the New York Daily News newspaper: "She came off her tour to see him in New York. Even his ex, Katherine Keating, knows they're a couple."
News of the new romance may comes as a surprise to rocker Barrie-James, as he has insisted he and Lana are still together.
He said: "It's not over. It's not over. Don't believe what you read, it's not over. It's just stories, bedtime stories."
The Nightmare Boy star also revealed that he and Lana, 28, are also still working on new music together and praised her new album, 'Ultraviolence.'
He said: "We have done for a long time... 'Ultraviolence' is ultra good."
Lana claimed in an interview last week that she and Barrie-James, whom she first began dating in 2011, had split because she wanted to feel "free," but hinted they might get back together again.
She said: "We are currently not together. He is a wonderful person. But there are some things with which he has to deal. I will not explain it in detail. This was hard on our relationship, I no longer felt free. We'll see how it goes."

Beyonce has paid tribute to the late Michael Jackson for helping her "become the artist" she is today.
The 'Run the World (Girls)' hitmaker penned a touching letter on her website yesterday (25.06.14) - the five-year anniversary of the King of Pop's death from acute Propofol intoxication - explaining how she learned "soul" from the 'Thriller" star when she was beginning her career.
Under the title 'Inspiration Michael Jackson' and accompanied by an early-1970s picture of the late star, she wrote: "When I was just starting out, my first producer used to make me listen to Michael Jackson's live performance of 'Who's Loving You'. He would have me watch that for hours back to back to back.
"What he wanted me to learn was his soul. You could hear his soul. And he was this little kid who hadn't experienced love but he was a vessel.
"For whatever reason he could evoke more emotion than an adult. It was so raw and so pure. It was these little things that he did that were just swag. It's something that's God given."
The 32-year-old star - who has two-year-old daughter Blue Ivy with husband Jay Z - went on to explain she had learned to be free with her singing and not always worry about technique thanks to Michael.
She added: "Michael taught me that sometimes you have to forget technique, forget what you have on. If you feel silly, you have to go from the gut just let it go.
"Michael Jackson changed me, and helped me to become the artist I am thank you Michael."
The message was then signed off "Love always, B."
Last night, Beyonce and Jay kicked off their 'On the Run' joint tour in Florida.

Gary Oldman has branded himself an "a-hole".
The 'Dark Knight Rises' actor thinks he should "know better" than to have made the comments he did in a recent interview - in which he defended Mel Gibson for using racist and anti-Semitic slurs and branded political correctness "c**p" - and is aware he should be using his fame to be an "inspiration".
He said: "I'm a public figure. I should be an example and an inspiration, and I'm an a-hole. I'm 56 and should know better."
Gary admitted he din't realise how "offensive and insensitive" his comments were until he read them back afterwards.
Speaking on 'Jimmy Kimmel Live', he said: "I said some things that were poorly considered and once I had seen it in print I could see that it was offensive, insensitive, pernicious, and ill-informed.
"Words have meaning. They carry weight and they carry on long after you've said them and I don't condone or excuse the words I used in any context. I just basically shouldn't have used them in any context, but I did and I have deeply injured and wounded a great many people.
The 'Harry Potter' star went on to stress how "profoundly sorry" he feels, particularly for letting down his fans.
He added: "I appreciate you having me here and extending your hospitality to put me in this seat once again and it gives me the opportunity to say to those people that I from my heart, I am profoundly sorry and deeply apologetic.
"Especially to the fans because they have been so incredible to me and very loyal. My nickname [for them is] 'Team Oldman' and I really feel that I let them down."

Ja Rule has slammed 50 Cent in his new book and claims the rapper was out to "destroy" him.
The star lashes out at the 'In Da Club' hitmaker in his memoir 'Unruly: The Highs and Lows of Being a Man' after a long-running feud with the star, real name Curtis Jackson, and claimed he was falsely accused by the 'Candy Shop' singer after he was hospitalised with nine gunshot wounds in 2000.
He writes: "When they [the police] asked him who he thought had shot him, it would make sense that 50 would have said, 'Ja Rule, Irv Gotti and Murder Inc.'"
50 later insisted he never cooperated with officers, even when they tried to make a case against Ja Rule's colleagues Irv 'Gotti' Lorenzo and Irv's brother Chris, who were acquitted of laundering drug money through their label, Murder Inc., in 2005.
Ja Rule, 38, claims the case couldn't have been made without the rapper speaking to the police.
According to the New York Daily News newspaper's Confidenti@l column, he wrote: "He secretly led them through his recordings for the answers they were looking for."
Ja Rule also claimed the pair - who buried the hatchet in 2011 - previously got into a fight in 2000 at a peace summit in Atlanta, Georgia and 50 "was a crazed man on a mission to destroy me."
He wrote: "50 tried to swing on me, but I dipped, then I hit him with the baby Louisville Slugger [a baseball bat].
"Bam! I dropped the bat. I pulled the shirt over his head. I started catching him left, right, uppercut."
50's crew reportedly ran away and Ja Rule also claims he led the charge in the Hit Factory recording studio attack in Midtown later the same year when 50 was stabbed.
Ja Rule, real name Jeffrey Atkins, admits he armed himself with a crutch taken from an injured crew member and marched into the recording studio to take it out on 50.
He said: "I hit him with the crutch. We proceeded to whip his ass. I was putting in my work. 50 was crunched in the corner. I slammed the big Tannoy speaker down on him."
His book 'Unruly: The Highs and Lows of Being a Man' is out next Tuesday (01.07.14).

Will Poulter could be set to star alongside Leonardo DiCaprio in 'The Revenant'. The 'We're the Millers' star is said to be in negotiations to join 'The Wolf of Wall Street' actor in the upcoming revenge thriller, which is based on the Michael Punke ...

Jason Sudeikis is in talks to star in a new comedy heist film. The ''Horrible Bosses' funnyman could star alongside fellow comedians Kristen Wiig, Zach Galafianakis and Owen Wilson in the movie - which was previously titled 'Loomis Fargo' - directed b...

Tom Hanks is in talks for a part in Meg Ryan's 'Ithaca'. The 'Forrest Gump' actor is reportedly being considered for a cameo role in the 52-year-old actress' directorial debut - a coming of age saga set during the first World War. The movie focus...

Mumford and Sons will play a secret set at Glastonbury festival this week.
The folk rock group - made up of Marcus Mumford, Winston Marshall, Ben Lovett and Ted Dwane - headlined the event at Worthy Farm last year and are set to return for one of their most intimate gigs in recent years.
A source told The Sun newspaper they are hosting their own area after their triumphant 2013 set on the Pyramid Stage.
The band will be at the Gentleman Of The Road Stage in the Fields Of Avalon on Saturday (28.06.14) and the area will feature artists from the group's record label, Communion, with Johnny Flynn, Michael Kiwanuka and Nick Mulvey all confirmed along with "expected [and unexpected] surprises throughout."
Meanwhile, Kaiser Chiefs - featuring Ricky Wilson, Andrew 'Whitey' White, Simon Rix, Nick 'Peanut' Baines and Vijay Mistry - are playing two high-profile sets at the Somerset.
They will open The Other Stage tomorrow (27.06.14) before closing the John Peel Stage later in the evening.
Ricky told The Sun newspaper: "It's going to be great. It's the first time we've played a gig in the UK for ages, so there's always a certain amount of concern about the show.
"But we're really looking forward to it. My voice now is better than it's ever been.
"I had to make sure of that after being a judge on a singing show ['The Voice']."

Eminem was banned from playing London's Hyde Park because of his "offensive" and "unsuitable" lyrics, according to new documents.
The 'Rap God' hitmaker, who has announced two dates at Wembley Stadium next month instead, tried to get London mayor Boris Johnson to overturn the decision to stop him from performing at Barclaycard British Summer Time - but his staff admitted they didn't know who the rapper was.
The comments feature in a number of letters and emails revealed following a Freedom of Information request by the Daily Mirror newspaper.
Royal Parks, which runs Hyde Park, claimed the show would "upset" other park users and promoters AEG had the decision referred to Boris Johnson.
His chief of staff, Sir Edward Lister, said: "Until receipt of both emails I had no knowledge of Eminem and his style of music and still do not."
They decided it was down to Royal Parks to make the decision and the star was banned from performing.
In an email, Royal Parks CEO Linda Lennon said: "This artist flagged risks across the board. In particular in respect of our public reputation.
"The nature of any act with potential for lyrics to be deemed offensive and/or unsuitable language being audible within the park as a whole, let alone the surrounding residential areas, is unacceptable."
Eminem, 41, will now play two sold-out shows at Wembley on July 11 and 12 and admitted it upset him when he was told he couldn't play Hyde Park.
He said: "That's mean, man. It kinda hurt my feelings.
"The easiest way to get me to do something is to tell me I can't do it. Thanks to the Royal Parks for making it all possible ... for Wembley."

Britain's Duke and Duchess of Cambridge's home refurbishments have cost £4.5 million.
The royal couple's ongoing plan to renovate Apartment 1A at Kensington Palace, which used to belong to Princess Margaret, is responsible for one of the largest chunks of Queen Elizabeth's official royal expenditure over the past year.
Spending from the sovereign grant rose by £2.4 million to a £35.7 million total, with more than a third going on property maintenance, according to The Independent newspaper.
And £3.4 million alone went on the removal of asbestos from William and Catherine's apartment to make it a safe place to live for 11-month-old Prince George.
An aide justified: "It was a priority. We have a backlog and we prioritise things in terms of the backlog but we also have to prioritise in terms of occupational activities of the royal household.
"In the case of 1A at Kensington Palace we needed to use it ... This is the couple's one and only official residence and it is here they plan to stay for many, many years to come."
The Duke and Duchess of Cambridge's future family home was last refurbished in 1963 so needs a "significant amount of work" to make it habitable, including new plumbing and electrical wiring, it was revealed during an annual briefing.
However, the total figure could have been much higher had Catherine and William not also paid out of their own pockets - with a little help from Prince Charles.
They forked out for interior furnishings, carpets and curtains, as well as a brand new kitchen to supplement the existing 350 sq ft kitchen for official events, financed by public funds.