Check this out, I learned this trick a few years ago.
Before you manage to go to the movies with a girl on a date, buy a Hershey Kiss Candy. During the movie, in a good part where you think it's good to kiss, ask her, "Wanna kiss?" or something along those lines, i dunno. If she says yes, go for it. If she says no, pull out the hershey's kiss from your pocket and say: "what? you don't like chocolate? ok..."
Completely awesome cover-up. Saves you from getting burned