Credit: Larry Busacca/Getty Images for EJAF

New couple alert?

Hollywood's biggest awards were being handed out on the Oscar telecast, but Emma Roberts and Chace Crawford seemed a lot more interested in each other.

At the Elton John AIDS Foundations Academy Award Viewing party in West Hollywood Sunday night, the Scream 4 actress, 20, and the Gossip Girl star, 25, kept sneaking smoke breaks together, a witness tells

On three separate occasions, the Twelve costars stepped outside to share cigarettes and chat one on one. Around 9 p.m., the pair seemed to forget the other A-list guests entirely and reentered the Pacific Design Center holding hands. Once inside, they immediately separated. See more photos from the Vanity Fair Oscars bash.

But even mingling inside, the duo couldn't hide their attraction. When Roberts chatted with Glee's Jenna Uskowtiz at the bar, she kept a constant eye on Crawford, and it wasn't long before she was back at his side, laughing. At one point she gave him a quick pat on the back. 

"Emma is clearly smitten with Chace," says the witness. "They weren't making out, but you could tell they had a definite chemistry and were into one another."