Am I stupid for being upset by my crushes past sexual relationships?

Okay, so I have (or at least I think I do) a crush on a guy a know from church. The day before yesterday my opinion of him was some what shaken and yesterday it was completely shot. At first I thought he was a nice guy with the same values as me, but apparently not. He’s 21 and he’s had sex with 15 girls. He says he doesn’t like to “think about the number and crap”, but I’m still relatievly upset. We both like each other, but I’m not sure what my opinion of him is. I’m disgusted, upset, sad, angry and almost any negative feeling you can think of because of his past. I got really rude towards him when he told me. I have no right to judge I know, but I can’t help it. I just want help to get over him. I know he is not the right person for me, but I can’t. I can’t sleep and I don’t know what to say to him. Should I break off communication with him? I’m NOT letting myself get dragged through the mud emotionally over this, so that’s why I need some opinions. I mean, he’s a nice guy, but his past overpowers everything else. I have to see him this week as well because he and my brother have plans and I have to go. I really want to say I’m sick, but then again I want to see him and treat him like crap. I want to hurt him like I was hurt by his past. I know that isn’t good, so what should i do?

Sorry if this has typos. I’m tired, it’s 3am and I’m just ugh…