A source tells the new issue of Us Weekly (on stands Friday) that the actress, 25, and the actor, 23, are an item. Though a second insider insists "it's not serious" between the two, the actors rang in 2012 with pals at posh Paris club Rasputin.
"They hang out together every night," says a source.
It's not the first time VanCamp has fallen for a colleague: She's dated Dave Annable, 32, her beau on ABC's Brothers & Sisters, and Everwood's Chris Pratt, 32. (Annable later wed actress Odette Yustman; Pratt has been married to What's Your Number? star Anna Faris since 2009).