A kiss from Sean Penn made the "Milk" shoot feel mighty real for one actor

Sean Penn reportedly took matters into his own hands (and lips) when shooting a disco birthday party scene for Gus van Sant's Harvey Milk biopic.

Performer Mark Martinez (aka Flava), who plays disco legend Sylvester in the scene, spoke to E! about his time on the shoot, including an impromptu kiss between him and the star:

“All of a sudden, Sean’s pointing at me, and he’s talking to the assistant director,” Martinez says. “The AD comes up to me and says, ‘Just to let you know, you are now going to break up Sean and [costar] James Franco’s conversation. You’re going to grab Sean, and Sean’s going to be really excited, and he’s going to kiss you.’”

And that he did. “I’m performing, and he comes onto the dance floor,” Martinez explains. “He grabs me, and he just slaps the biggest kiss on me...It felt like the kiss was forever. I’m like, Is he going to stop? I had to close my eyes. I couldn’t believe it.”

Martinez added that he tried to convince an obviously amused van Sant to do another take, but the director said that they got the shot.

Now our real question is, will Penn be kissing his co-star in the film? Like a real couple?