Daniel Radcliffe may be dating his "Kill Your Darlings" co-star Erin Darke after the two were seen spending time together at the Sundance Film Festival on Friday.

The 23-year-old "Harry Potter" star was seen kissing and cuddling Darke closely Friday while on a date at the Grey Goose Vodka Lounge at the Blue Door.

"They were affectionate most of the night," said a source reported by Us Magazine. The source added that Darke allegedly "was touching his knee" at their VIP table. "They were a little more obvious outside the venue after they were leaving."

Daniel was also seen spending time with Darke on the dance floor and drinking a few cocktails at the club.

People Magazine also cited Radcliffe's dodged response when asked if Darke was his new girlfriend.

"Erin? Oh, Erin Darke?" Radcliffe said. "Yeah, the whole cast is here. It's fantastic."

Though Daniel Radcliffe hasn't confirmed that Drake is his girlfriend, onlookers said they were definitely a couple.

People also talked to an unidentified person at the party stated, "They've been dating for a while but have been debating going public."

"Kill Your Darlings" is about a 1944 murder involving literary heroes of the Beat Generation. In the movie, Radcliffe plays poet Alan Ginsberg and has a few explicit gay sex scenes.'

The film has gotten good reviews for the most part.

"Radcliffe provides a defining performance," said a review in The Independent. "He is simply terrific as the 18-year-old Ginsberg, fumbling with his sexuality as well as his spectacles, and entirely in the thrall of his friend, fellow writer Lucien Carr."

The annual Sundance Film Festival is held in Park City, Utah starting on Jan. 17 and ends on Jan. 27.

Radcliffe's previous relationship was with his ex-girlfriend Rosie Coker, a production-assistant.  The relationship ended in October 2011, according to OMG! .