Last night I talked to a cute girl. We chatted for a while, and she sent IOI's but I wanted to leave and she wanted to party. Plus, to be honest, I have no idea how to close at a crowded party. "Wanna go have sex?"

I got her phone number but what am I supposed to do with this? Based on her outfit, which covered the total surface area of a Kleenex, I sort of doubt she's looking for a relationship. So asking her out to coffee seems silly. This sort of thing has happened before--girls give their numbers out like candy, and I don't know what THEY expect, even.

On all of this, advice?