What would make him act this way?

Well first off you have a right to dress however you want, and jean miniskirts are in big style and that's why they're so popular with younger girls like you. They're not just a fad because they've been in style for a long time and they really do make a cute girl look hot. I think he acted like a total jerk because just because you decided to dress so that you looked cute shouldn't have been construed by him as your intention of giving him or anyone else any "action". Besides you said he was your friend so he acted completely out of line. He did those things because secretly he likes you and finds you hot, and for some stupid reason he thought just because you were going to his apartment alone with him was your way of teasing him... a big mistake of his. He acted nice afterwards because he was embarrassed that he had acted like a jerk and it was his way of trying to make up and make himself look like the nice guy you thought he was in the first place. I don't think he'll try that on you anymore, but be aware that he does think you're hot and quite possibly he likes you. By the way, I'd say you turned him on last night. By the way, a girl with an attractive figure dressed in a mini jean skirt is one of my favorites. lol!

I agree, too many guys are like this, they are nice to try and get what they want. If you do something, even as basic as spending time were its just you and him he'll think you might like him, make his move and in this case he'll be very blatant about it. But if you threaten to leave, he will be nice just so you stay and he can try convince you it was just a one off thing, most likely if you showed any sign of liking him he would try it again... Usually if he acts this way he is only thinking about himself and what he wants, its things like this which is why I don't have any guy friends.

Because he's thinking with the head between his legs. He wants something sexual and as soon as you threatened to leave he decided to be nice so you wouldn't. Just stick to how you feel and if you don't want to do it, don't let him talk you into it.

I just wanted to say that just because you wear an outfit that can be interpreted as sexy does not mean that you are "asking for it". I cannot believe that in 2009 people actually still believe that. The fact of the matter is sexy clothes like miniskirts have become normalized and are a part of attractive girl's wardrobes. Wearing it does not signify that you are ready for the sexing, it's just the style nowadays.

I think this guy has been interested in you sexually for a long time and when he saw your outfit he used that as an excuse. He is a jerk and then only pretended to be nice because he wanted to continue the nice guy act and not completely ruin his chances. You just saw his true colors. A man that is really that nice wouldn't be that forcefully aggressive and act like he's entitled to sex.

don't listen to what he said, he would have been just as horny if you were wearing a sweatshirt and jeans. he was acting on impulse, and thought if he kept asking you'd cave. most likely, he was planning on something happening that night, that's why he was relentless at trying to make it happen.