I had sex with him

I had sex with this guy I’ve known since middle school and high school. He’s very cute don’t get me wrong but In middle school he was so mean to me and we never talked in high school because we hung out with different people and he didn’t seem interested in me. I never thought he found me attractive, let alone wanted to have sex with me. Last night we chatted and one thing led to another and I ended up going back to his place and we had sex.. I still can’t believe it!