My friend asked a guy if he wanted to hook up...and he said nothing?!?

Not all guys want casual sex as you believe. He probably was taken back by the offer, offended even. His lack of response is an obvious no, if he wanted sex he would have said yes. Don't push him for it.

Im and 18 year old guy and this has happened to me a lot in high school, I didn't go through with it like this guy because i don't know it just doesn't feel right. see i got a lot of girls to like me beautiful girls, and since i knew that i kind of didn't want to just have sex i wanted to find the right girl to be with. Even if your friend is beautiful she came on too strong for this guy and he got a bad impression of her. But this could also be because he isn't confident about his body or his performance, but to me it seems more like your friend was coming on too strong. Trust me though he's a guy he did want to do it with her, but he fought the urge. Your friend has nothing to be embarrassed about im sure he was very attracted to her

He is not interested .Most likely he has a modest girl back home .And what is up with you knowing your friend wants him. why also would you give yourself to someone you do not know very well and he will be gone soon.

if he didn't say anything than he doesn't like her