I'd like to sort it out

Ok, so I met up with this really nice, and REALLY good looking boy. Because he started talking to me on msn and said he thought I was pretty and wanted to meet up. so I did, we went back to his house and was just talking and he started to hug me and we started kissing. it was really nice it didnt feel like I was just getting with someone, it felt like I had known him for ages and he was like my boyfriend. he was so nice. we didnt do anything sexual just kissed but really passionatly. so the next day, I was on msn we hardly spoke he just said hi and how are you babe and wuu2? I did answer but not saying much. Because I had to go out. I got home and remembered something someone had said to me a while ago about him. which I didnt think was true but decided to ask anyway. so I wrote on msn asking if he had sex with a number of different girls in one week. he got really defensive and pissed off and kept asking me who told me, but I couldnt remember who because it was a long time ago. he then told me to piss off, so I replyed saying that I didnt mean it in a nasty way, I just wanted to know if it was true or not. but he was really annoyed and went offline… and im pretty gutted because he was so nice to me and even though I didnt really know him at first when I met him I felt so close to him. so I dont know what to do now. and so I got told to leave him a message, which I have saying sorry it was none of my buisness and stuff. but what shud I do if he… ignors it? or just tells me to piss off? I mean yeh if he tells me to piss off then maybe I just should, but I must have really annoyed him and wud just like to sort it out…