Daniel Radcliffe flirts with 'Kill Your Darlings' co-star Erin Darke in Utah

Washington, January 20 (ANI): Daniel Radcliffe, who attended the 'Kill Your Darlings' premiere during the 2013 Sundance Film Festival with Erin Drake, seems to have cast a spell on his co-star as the two were seen packing on the PDA at Grey Goose Blue Door in Park City, Utah on Friday.

"They were affectionate most of the night," Us magazine quoted a source, as saying.

According to the source, the actress "was touching his knee" at their VIP table.

"They were a little more obvious outside the venue after they were leaving," the source said.

The stars have yet to comment on the nature of their relationship, though a second insider says "they've been seeing each other" quietly in New York, where they both live. (ANI)