Pappy brings up a good point (well many good points, but one in particular that I feel can use further elaboration), and that is the no flowers right after the first time you have sex. It can make the girl feel like a prostitute or something, like you only got her flowers as a thank you for the yummy sex. However, you MUST call the next day after the first time you have sex. MUST. I've had a girl sleep with someone else just because she was pissed at me for not calling, I know the score. If you don't call the next day the woman starts thinking "This is typical, he did me and now he's never going to call, fuck him". So even if you get hit by a truck, use that ambulance phone to call the woman the next day. Everything else Pappy said is true, if you act too desperate with a woman it's a complete turn off and they'll forget about you no matter how hot you are. Women aren't like men, if a man is into a woman she could eat a live puppy in front of him and he'd just be like "Oh, I guess she was hungry, look at that ass!" but women need more than just the looks, they need the whole package, and one slight little variable can completely fuck up the whole deal. So no desperation and call the next day.