<human>: Absolutely shocked by the allegation, My brother currently has a alchohol problem and I have pestering him about it for a few weeks now, 

I called him today and he was in a bar as usual and drunk - I tried to threaten him about calling the cops and getting him to a clinic and also revealing to our parents that he has been locked up a couple of times for being drunk.

 At this point he said that he would tell them I was abusing him as a child at which point I freaked out at him for bullshitting and got really angry - he as adamant that I did and went down to saying that I had anal sex with him and that he had not spoke about this and kept quiet about it. 

He seemed to really believe it happened and that I did that on more than one occasion. I tried to ask him when and where I did this and he says in the shared bedroom, after that he just said he didnt want to talk about it and would keep it quiet.

So Im raging at this point because I cant remember any shit like that going down and I think I would, I hate that I am doubting my memory and thinking somehow that I have repressed my own memory.

I feel hes just trying to up the ante in the game and threatening me with something so that I would stop hassling him about his drink problem, I know my brother has issues and I know that I should discount what hes saying but
What if I did do something? What if I didnt do something - but someone else did - and his memory is of me doing it?

How can I help him with his drink issues without him accusing me of this shit?

Can you give me a shortened version of the text?
<bot>: Brother just acccused me of sexually abusing him when we where both children, I dont rememeber anything - he's adamant it happened