Casual partner - does he not care?

I met a guy at uni who is on a year abroad from america. We met in November as we were both in the same charity show. He started asking me to meet up with him so he could get to know me around January time. So since then, probs around once a week we would meet.. usually at his place and we would just talk and listen to music (he never made a move until around end of Feb). I invited him to mine around March time, and that's when we had sex. And since then he has been keen to still see me and the fews times after he came round, I didn't have sex we just watched a film. Then, I had sex with him again for the second time. And although I enjoyed it at the time, I felt really bad about myself a few days after. And basically since then we have been meaning to meet up but I've either cancelled it or he has just not turned up. he did this twice in a row and apologised and said he still wanted to see and make it up to me. I was really pissed off (but didn't say it) and just asked how he was going to make it up to me and he said something that obvs suggested sex. However, a week before this i told him i didn't want to have sex with him anymore. when he asked why I just said I don't want to anymore and cos he was still going to come round I thought I'd explain when he comes (but then I cancelled). Anyway, when he said that about sex again, I just replied saying I said I didn't want to do that anymore and he didn't reply and hasn't text me since. I text him yesterday and he replied just saying "hey" and when I asked him how he was he didn't reply. I know I was obvs just a booty call to him and now I've said I don't want to have sex with him it's like he's not arsed about me or doesn't even just want to be friends. just that's it nothing there. Like he is going back to america in july so I don't think I care too much either. But I just feel so USED.. and that's what hurts the most. I care about my feelings and he doesn't give a ****. It has really annoyed me. I have never had casual sex with someone before so I guess I went into it all really stupidly. I haven't had much experience with boys before so I don't think casual sex was a good idea lol Should I just leave it and ignore him? Or should I confront him? Or should I just act completely normal? That's if he does text me or if I see him around uni.

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