"She was completely in charge," the actor, 64, tells PEOPLE of their enthusiastic make-out scene in a telephone booth.

The former star of Gandhi and Schindler's List ñ who's currently shooting with Martin Scorcese in Boston ñ drove down to New York for the movie's Cinema Society and Sony Cierge-sponsored party at the Gramercy Roof Club.

"I love watching the movie," his wife, Daniela, said of the coming-of-age stoner film. As for her real-life leading man, she added, "I love him. He's amazing."

While we love the idea of Ben's wife seeing her husband sucking face with MK and responding with a hearty round of raising the roof and a couple of "woot woot"s (because that's how people express their love for cinema, right?), we really love the idea of MK grabbing onto Ben's silken robes, throwing him against the wall of the phone booth (btw, what?), and sucking on his mouth like she's Tara Reid and he's a bottle of Grey Goose. Totally hot.

Check out more pics of MK at The Wackness premiere at Daily Stab.

GET ready to cringe during Sir Ben Kingsley's new movie, "The Wackness," in which the Oscar-winner, 63, passionately locks lips with tiny Mary-Kate Olsen, 21. Currently shooting in New York, the film directed by Jonathan Levine is about a drug dealer who trades marijuana for therapy sessions with his shrink, played by Kingsley. Insiders say the steamy scene with Olsen – described as a "full on make-out session" – was shot at a Greenpoint watering hole.

We can only hope that, like Angelina Jolie, MK has a thing for continuing to play dress up with her costars after filming has wrapped and a new couple will be born. We'll call them BeMK. Then, not to be outdone, her sister Ashley will follow suit by hooking up with Ralph Fiennes. Mature British actors will totally be the new shivering, bedazzled chihuahua.