Hayden Panettiere & Paul Rust: Kissing Up!

Hayden Panettiere shares a scene-stealing lip lock with costar Paul Rust on the set of their new movie, I Love You Beth Cooper, in Los Angeles on Sunday.

The film is about another nerdy valedictorian Denis Cooverman (Rust), who proclaims his love for the hottest and most popular girl in school – Beth Cooper (Panettiere) – during his graduation speech. Much to his surprise, Beth shows up at his door that very night and decides to show him the best night of his life. Lots of kissing ahead!

Camp Rock cutie and Disney sensation Demi Lovato is rumored to have a guest role in this film.

While shooting this scene, Hayen‘s real-life boyfriend and Heroes costar Milo Ventimiglia was on the other side of town, staying in shape with a run around town.

10+ pictures inside Hayden Panettiere and Paul Rust‘s smooching session…