So I went out with a guy last night, or shall I say that I went to his house. I know him from AA, so of course I assumed that he was sober because he is in AA.

He sent me a text and asked me if I wanted to come over and watch a movie with him last night, me not having done the whole dating thing in like 10+ years didn't think anything of it and agreed to, thinking we were just going to talk and watch a movie.
When I got there he was stumbling around pretty bad, and he told me it was because of some new medications that he was on, I didn't think twice about it.
So we get up to his apartment and he asks me if I want to kiss him. I wasn't really ready for that, but I didn't know how to say no. So we proceeded to make out.
All of a sudden his mom comes home and says 'you've been drinking again haven't you? to this guy. Of course the guy denies it, and continues to kiss me and make his move. He then asks me into his bedroom, which I guess was his mothers, where he takes his pants off and crawls under the covers. By this point I am very worried about him because he looks like he could fall asleep any minute, and again I am still thinking it is medication. Nieve me, huh. Anyway then his mother proceeds to bang on the door and tell him that he is not going to do this in her house and that he needs to go somewhere else. He ignores her and proceeds to try to get me undressed, the whole time I am telling him that I don't think that is a good idea, and that I am not ready for that. He tells me that we are not going to do anything sexual and that it wouldn't hurt to have our clothes off.
Meanwhile his mother is still banging on the door wanting to come in and stop this whole churade. She threatens to call the cops 'again' if he doesn't listen. At this point I am shaken up and decide I need to go. He BEGS me to stay, so I do. His mother again bangs on the door and asks for her phone and keys, he gets up to find them and proceeds to fall over into the window. (This is after he has fallen on me once already). At this point I am fed up and tell him I am leaving. So I leave not after he begs me again to stay.
Meanwhile while I am getting my purse his mother is saying to me 'why would you want to be involved with someone like that'. I just leave.
I am not sure how to process all of this, it really shook me up, thank goodness I had my car so I didn't have to walk home after all of that.
When I got home I sent him a text telling him that I can't be involved with someone who drinks. I should mention that as I was leaving I noticed a vodka bottle stashed on the dresser in his bedroom. His mother sent me a text back saying that he was passed out and that she was sorry for his behavior.

This morning he sends me a text asking me to come over again for a few hours and that his mother was going to be gone all day. I sent him a message back telling him that I had other plans.

Being that I was sexually abused as a kid, this brought up a few memories and really scared me. The fact that this guy was not going to take no for an answer really shook me up. Now I have to face this guy at the AA club that we go to for meetings, and I am not sure how to react to him.

I just wanted to explain what happened, if anyone has any advice, it would be much appreciated.