What's one way to keep your hands warm when heading to your local pub?
Hold hands with your hot costar!
And although they denied any romance back when Rachel split with Black Swan director Darren Aronofsky, their body language inside of the pub told another story...
The twosome "looked like a romantic couple in a film," according to News of the World. "They were laughing and chatting and hanging on to each other's words and stopping to take photos of each other."
Well, snapping pics of each other and talking seems harmless enough, no? They have admitted their longstanding friendship.
But then again, a pub customer tells the UK paper, "They were clinging to each other like honeymooners. The chemistry was obvious."
So maybe their romance on-screen continued once the cameras stopped rolling.
Either way, at least Darren's got something to be happy about. His ballet movie has made $6.6 million at the box office and is getting high marks from critics along with award nominations.