Hilary Duff's ex-boyfriend Aaron Carter wants her back.
The 26-year-old singer-and-actress - who announced she had separated from husband Mike Comrie after three years of marriage in January - dated the former pop star for 18 months when they were teenagers and he now says their split is one of his biggest regrets.
After retweeting a picture of his former girlfriend which was captioned: "Hilary Duff is flawless", Aaron then tweeted: "Don't be that stupid douche that loses the love of your life forever.. Like me..
"I'll spend the rest of my life trying to better myself to get back to her.
I don't care what ANY of you think.(sic)"
And the 26-year-old star admitted laying bare his feelings had made him nervous.
He added: "That tweet just gave me an anxiety attack (sic)"
Aaron has previously spoken of his regret at cheating on Hilary with her then-best friend Lindsay Lohan.
He has said: "I started dating Hilary on my 13th birthday... I was dating her for like a year-and-a-half and then I just got a little bored so I went and I started getting to know Lindsay, dating Lindsay.
"Then I didn't want to do that anymore, so I got back with Hilary. And then I ended up cheating on Hilary with her best friend. That's nothing to smile about. She wasn't even that good looking either.
"She (Duff) really got her heart broken from me and I'm sorry for that."

WWE Superstar Fandango wants to be a contestant on 'Dancing with the Stars'.
The 32-year-old wrestler is a fan of the programme and if the opportunity arose to compete on the ballroom show he'd jump at the chance.
Fandango - who uses ballroom dance moves in the ring and is always accompanied by his 'dancing partner' Summer Rae - first got into the series when fellow WWE Superstar Chris Jericho competed on it in 2011.
When asked if he'd like to compete on the series, Fandango told BANG Showbiz: "I would like to give it a go, I just need the right partner - maybe a lingerie model!
"I've watched 'Dancing with the Stars', I watched when Chris Jericho was on it, I think it's cool. It's always cool to see the stars - whether they're a football player or an actor, an actress, a model, whatever - put into that situation of crunch training to try and win the show. How they deal with the pressures and their egos of not being really good at it is interesting to see."
Fandango and the other WWE Superstars are currently getting ready for their biggest event of the year 'WrestleMania XXX' - which can be watched from 1.00am on April 6 via Sky Box Office - and he admits the atmosphere in the locker room has changed as the show gets closer.
He said: "For the newer generation of guys, like The Shield, Big E Langston, Bray Wyatt and myself, it's our first or second year at 'WrestleMania' ... It's exciting to see the landscape change and see the newer guys become major players in major storylines.
"There are a lot of nerves for the younger generation, there are a lot of guys dieting and training hard but these are my favourite weeks of TV leading up to 'WrestleMania' because you never know how the landscape is going to alter or how the storylines are going to turn going into the big show."
Fandango and the WWE will be visiting the UK in May, information and tickets are available at Bookingsdirect.com.

Newly engaged Mary-Kate Olsen showed off her sparkling ring as she stepped out at the Louis Vuitton show during Paris Fashion Week. The actress turned fashion designer is set to marry french banker Olivier Sarkozy.

Jennifer Garner looked sophisticated in a black full-length coat and scarf during a coffee run in New York City.

Beyonce and her husband Jay-Z left baby Blue Ivy at home for a date night at The Arts Club in London's Mayfair. The 'Drunken Love' singer has been performing in the capital for the UK leg of her 'Mrs. Carter Show World Tour.'

Heavily pregnant Olivia Wilde enjoyed a stroll around New York with her pet dog Paco. She wrapped up in a thick woolly scarf and a long buttoned coat.

Naomi Campbell ensured all eyes were on her in a fitted tuxedo jacket as the cast of 'The Face' rang the NASDAQ Closing Bell in New York.

A smiling Rita Ora sported a bright blue baseball jacket and skirt as she headed to a business meeting in Beverly Hills.

Pixie Lott looked stunning in a cute printed playsuit as she emerged from a three hour stint in a hair salon in Notting Hill, London. It seems the popstar may have an admirer as she held onto a large bouquet of white flowers.

Jessie J showcased her quirky style as she stepped out New York City. The 'Domino' singer accessorised her purple blazer and lipstick with supersized hoop earrings.

Lea Michele looked ready for action on the set of Good Morning America. The 'Glee' star vamped up her look in a leather look pencil skirt and styled her hair into beach waves.

Emma Watson looked stylish in a classic trench coat and black mini skirt as she landed at London's Heathrow Airport. The former 'Harry Potter' star hid any tell tale signs of her long haul flight behind oversize shades.