Ian Somerhalder was spotted kissing his ex-girlfriend Maggie Grace following news that his former love Nina Dobrev has moved on to Miley Cyrus's ex-boyfriend Liam Hemsworth. However, a relationship between the two might not be definite seeing as the actor only kissed the pretty blonde on the cheek.

According Us Weekly, the former "Lost" costars and real-life exes looked pretty close when they reunited on Sunday, March 16th, at the show's 10th anniversary reunion panel at PaleyFest in Los Angeles.

The two sat side-by-side onstage and playfully teased each other as they reminisced the old days with fellow cast members about their time on the show.

An eyewitness revealed that they had a "fun, flirty chemistry" and at one point when Ian Somerhalder spoke about Maggie Grace, he leaned in and kissed the back of her neck.

"The Vampire Diaries" season 5 cast member, 35, decided to share a funny story about the "Californication" starlet, 30 whom he dated in 2006.

On "Lost" the two played step-siblings with high sexual tension towards one another. In one scene from the first season, the costars were required to kiss however, before filming begun, Grace took the liberty of stuffing her mouth full of garlic and took a few puffs on a cigar. She admitted the prank was, "One of my proudest moments."

The actress posted several photos of the happy reunion to her Instagram account. One of the pictures featured Somerhalder giving her a kiss on the side of her head, while another shows her relaxing on a couch with him and three other guys.

She captioned the snap shot, "Losties reunion, pregamin it last night. @iansomerhalder @brynmooser #burky #joshholloway. Love you guys so damn much."

In another picture, in which she is sandwiched between Somerhalder and Holloway, 44, she wrote, "#PaleyFest? More like #LOVEfest! Such a great night, thank you to everyone who participated!"

Who do you think Ian Somerhalder should be dating? Let us know your thoughts in the comment section below.