Hot new couple alert?

Not exactly.

OK! GALLERY: KEIRA KNIGHTLEY AND ADAM LEVINE HAND IN HAND ON MOVIE SET

Keira Knightley and Mark Ruffalo were spotted making out in NYC yesterday, but the lip-lock had to do with their roles in the upcoming flick, Can a Song Save Your Life?

In the movie, Keira plays a struggling musician who moves to the Big Apple with her lover and bandmate, Adam Levine, who swiftly dumps her. Post-split she meets and romances Mark's character, who just happens to be a big-time music producer.

OK! NEWS: ADAM LEVINE SET TO MAKE BIG SCREEN DEBUT IN CAN A SONG SAVE YOUR LIFE?

The movie is set to hit theaters sometime next year, and co-stars Hailee Steinfeld.