“Glee” star Dianna Agron got hot and heavy with her new boyfriend, “Black Swan” actor Sebastian Stan at rooftop lounge PH-D at the Dream Downtown Tuesday. Agron danced all night long and was caught “kissing Sebastian off and on throughout the night,” a spy said.

PHOTOS: DIANNA AGRON

The couple partied with Jessica Szohr at a booth until 2 a.m. Agron previously dated hotheaded Alex Pettyfer, but they broke up in February after he got into a confrontation with Stan accusing him of hooking up with Agron. It seems Pettyfer had reason to be upset.