Love lessons for my 20 year-old self

I didn't date a lot before I met my current boyfriend. I'm just not the type of girl who thinks a free meal is worth wasting two hours of my life over a guy I have zero interest in. I'd rather rob a Burger King. Put the spicy chicken wraps in the bag. NOW! Whoa, anyway. Even so, I have learned a thing or two about dating and the opposite sex over the years. So here's what I would have told my 20 year-old self if I had known back then what I know now:

Love is not enough. Timing is everything. Any guy who doesn't feel worthy of you, doesn't deserve you. The right guy will admit that you make him want to "be a better man," and he'll actually be one. He'll push you to be better, too. If he looks like he's 23, says he's 21, he's really 19. (Whoopsie.) If your friends don't like him, neither should you. It's one thing if he's broke, but quite another if he's just a cheap asshole. Overtly cocky guys are incredibly insecure about...pretty much everything. If he requires constant fixing/mending/reassuring, he needs a therapist--not a girlfriend. Chest hair should not be a deal-breaker. Trust a European accent over a southern one. You still might get screwed, but you'll have much more fun. If he insults your intelligence and feels the need to constantly remind you how smart he is, he's a dick. He shouldn't have to be 20 beers deep to say those three little words. And you shouldn't either. If he wants to call, he will. So stop wondering if he knows how much you like him. Trust me, he knows. And if he simply just can't man the fuck UP, you don't need him anyway. He should always make you feel beautiful. ALWAYS.

So tell me: What lessons in love have you learned over the years?