You know who's not getting laid? The guy who seems like he's all about getting laid. Wear your sexual thirst on your sleeve and you're guaranteed to return home just as parched as you came.
A woman wants to feel desired, not objectified, which is why you should never act like you want sex, you should act like you want her. You can't keep your hands off of her; she's just that enticing. Seducing a woman is not about making moves, it's about making her feel seductive.
Which, coincidentally, is exactly why "Can I have sex with you?" is the least appealing inquiry ever. If you have to ask, at any point in the night, whether it's going to happen, it's not going to. Don't ask. Just let it happen. Be about her now and she'll be about you later.