Ah, Valentine’s Day. A day of romance. A day of love. A day of investing far too much, time, energy, and money trying to impress your partner. And because you’re a movie fan, everything you’ve learned about romance comes from what you’ve watched on the big screen. Don’t be ashamed, the movies (mostly) have this whole “dating” thing down — the way the girls do in this weekend’s How to Be Single as they navigate the dating world of New York City….