Dating

Why does this make me feel so horrible?

I got drunk last night and a guy I was talking to came and picked me up. He was a little hesitant to hang out as he hasn’t been with anyone in many years since him and his fiancé ended cause she cheated on him, well one thing led to another and we did things. After it happened he sat there saying how he feels like he’s cheating and how he regretted everything, he proceeded to tell me how I was trouble and he shouldn’t be sleeping with anyone before marriage. Which I respect but at the end of the day he’s the one that came to get me? I don't know made me feel like crap and now I don’t know what I did wrong.

Updates
+1 y
We haven’t talked since and frankly I feel so bad about myself I don’t know what to do
Why does this make me feel so horrible?
Post Opinion