Co-stars and former couple Ian Somerhalder and Nina Dobrev put on a friendly show at Vampire Diaries 100th episode celebration



Their three-year romance ended in May but Nina Dobrev and Ian Somerhalder have managed to maintain an amicable relationship.

The Vampire Diaries co-stars joined their castmates for the 100th episode party for the CW series in Atlanta, Georgia on Saturday and the pair put on a friendly performance as they posed together on the red carpet.

In one picture, Nina was squeezed in beside Ian for a photograph with many of their co-workers, proving that their vow to remain friends has been upheld.

Moving on: Nina Dobrev and Ian Somerhalder (centre) gamely posed beside each other despite their split as they celebrated the 100th episode of The Vampire Diaries in Atlanta

Dressed to impress: While Nina flashed her toned pins in a bright mini dress, Ian was dapper in a dark suit



Nina, 24, was dressed in a clinging printed mini dress and high heels, showing off her long toned legs,

She curled her long brown hair and left it loose around her shoulders and her sensational appearance will surely have left Ian pondering what he is missing.

Keeping things professional: Nina and Ian celebrated the 100th episode of The Vampire Diaries in Atlanta with castmates and happily posed beside each other on the red carpet



However, Somerhalder, 34, also looked good, in a dark suit as he flashed a smile for the camera.

Ian and Nina, who appear in the CW series as Elena Gilbert and Damon Salvatore, began quietly dating in 2010 - a year after the hit show started filming.

Changing it up: The former couple later posed for pictures with their colleagues between them but appeared relaxed



Last year, Dobrev revealed that she never wanted to date Somerhalder, but she simply couldn't resist her feelings.

In an interview with Seventeen magazine the actress admitted: 'Sometimes you can't help who you have a connection with, and you can only fight it for so long.'

Hard at work: Nina gamely posted on a smile as she took to the red carpet to answer questions about the show

Co-stars: Kat Graham, who plays witch Bonnie, and Paul Wesley (Damon's brother Stefan) also joined the stars at the celebration



The witch and the vampire: Kat and co-star Candice Accola (who plays vampire Caroline) took to the red carpet as they celebrated the show reaching 100 episodes



Dobrev added: 'I didn't want to be dating one of my co-stars - my goal on the show was to be professional.'

Fans of the show will know that Nina's character Elena and Ian's alter-ego Damian finally got together at the end of the fourth season of the show.



The originals: Phoebe Tonkin and Claire Holt from The Vampire Diaries spin-off The Originals also took to the red carpet at the party



And executive producer Caroline Dries previously revealed that while the pair's romance has so far not gone smoothly, season five, which is currently airing, will see them 'being genuinely happy for a little while because Damon has fought so hard to be with Elena'.

She told Celebuzz.com: 'We kind of want to go against the grain, and make them a happy couple without bickering and fighting every episode but actually make their relationship suffer from real life issues that come up in normal people relationships and make it less about mythological conflicts.'

Co-stars at the event in Atlanta on Saturday included Paul Wesley, Kat Graham, Phoebe Tonkin, Claire Holt, Candice Accola and Matthew Davis.



Eye-catching: Matthew Davis stood out in his red suit while Zach Roerig went for a more classic look





