but why?
Because when your 22, and the girl is turning 18, there's quite a bit of age difference.
Basically, as far as he's concerned, she's just using him because he has a house, and he has trouble saying no to a girl. He didn't want to be surrounded by a bunch of loser kids who don't know how to party, so he basically had a pre-party with his friends before hand. Let's put it this way: I arrived between 8 and 8:30. My friend was hammered already, and everyone had been drinking and such (just his friends). By 9:30, I was drunk, and high as fuck. I think the girl and her friends started showing up around 9:45-10... By the time their party was going strong, I was in the bathroom, waiting to get sick, lol. I passed out in the upstairs bathroom till about 6, dozed on the couch till 8, when one of the other guys that was at the party woke up and needed to leave, so I moved the car, woke my girlfriend up, and left.