We hear plenty of stories about girls who sleep with some guy and soon realise the guy was after just one thing: sex and after a while, once he'd had what he wanted, he buggered off, leaving a distraught girl who had become emotionally attached and was hoping for a serious relationship.
A few months ago, I met a girl in a club and went back home with her and stayed a couple of days with her. She lives far away so I went to see her again, making sure before that she really wanted me to come and visit. A few days later, after I'd become very attached to her, she told me that things shouldn't continue, that it was just a bit of fun for her and she was worried I was taking it too seriously. To be honest, I'd never had such strong feelings for someone so quickly. She was really "out of league" in a way: I don't get that much female attention and I'm not too successful whereas she is absolutely stunning (this isn't just me being infatuated).
I can't help feeling I was badly used, just for "a bit of fun" (a nice way of saying "for sex"). Until then, in most situations where I'd been with a girl, if she slept with me, she was usually the one who wanted things to continue... so this whole thing caught me off guard.