<human>: Can you give me the gist of the text in a nutshell?

Original post:  

I saw him last night for a date.  I apologized to him again, and he said it was ok.  We joked about it a little, and he asked  to see the picture of the guy I thought was him.  He laughed when he saw it, and pointed out all of the things that were giveaways that it was not him...the guy was smaller than him in the chest, and his belly is way hairier, the guy's arms were not nearly as muscle-y, etc.  I felt stupid and silly, but considered it done with.

We had a fun date, and sex afterwards.  The problem was with the sex.  We don't get to do it often, so usually we try to make it really nice.  Last night, that didn't  happen.  It was a quickie, and then he said he was going home.  I was obviously confused by his behavior, so he asked what was wrong, and I told him.  He got upset again, said he couldn't do  anything right, hugged me goodbye, and left.  I haven't heard from him since,and I usually do.

I'm confused, and I just don't feel good about any of this.  I think I should ask him if he wants to take a step back and re-evaluate our relationship.  If he's going to harbor resentment and can't communicate about it, or if he's not feeling the same for me anymore, then I don't know if I was to continue having the same level of attachment to him.  I don't want to be hurt.
<bot>: Decided that was not my boyfriend on the dating site, but I don't feel good about the aftermath.  Wondering if I should step away a little bit.