Zac Efron kisses Imogen Poots

Zac Efron and British actress Imogen Poots shared a steamy kiss as they filmed scenes for their new movie Are We Officially Dating?

The co-stars were pictured locking lips on the set of the romantic comedy, which is centred around three New York-based bachelors who make a pact to have as much fun as possible while remaining single.

Click through the gallery for more Zac and Imogen as well as other stars kissing on set...