All pick up lines are by definition, almost always cheesy. Why? Because being obvious about you're trying to pick someone up with a one liner is in itself cheesy.
So, should we all just pack up and go home? Absolutely not! When you use corny pick up lines, you are essentially telling someone that you are interested in them. That's not bad. That's Darwinism. Survival of the fittest with a license to fire up the reproductive system. And you're not afraid of expressing yourself. You're a go-getter, know what you want. That's attractive, which makes YOU attractive.
So how about that cheese now? Yeah, go for it and own it!