There's an indie romantic comedy made around the turn of the century called The Tao of Steve. It's about a philosophy student turned fat kindergarten teacher who has incredible success with the ladies. He explains how to a younger guy, but over the course of the movie he finds his ethos are pretty shallow when he wants to land the one he really loves.
It's got some great dialogue and a winning performance by Donal Logue as Dex, and I totally recommend it. I can't help but wonder, though, how many people walked out thinking, "Boy, he learned his lesson," and how many walked out thinking, "Man, I gotta learn those rules."
Anyway, watch the trailer and then put it on your Netflix list. Be ye guy or be ye girl, you'll not be sorry you saw it.