I'm afraid of everything, afraid of denial, afraid of him admitting, afraid to upset him, afraid to hurt him (or anyone for that matter)

But I already got a response and it was much worse than I'd thought it would be, much worse than I was afraid. He said

"Yea Ben made me do things.when he taped it. I tried.to ignore it All these years, I respect your.decision
I've wanted to talk about it because I was young too and I got beat for it. I didn't know what was happening. I'm ****ed up over.this.for 20 years
And he used.to kiss me.in my room
I won't ever come.around you, mom or.Brian again"

I have blackouts from my past but Ben was a serious abusive ex of my moms, he beat us all the time and it got to the weird stage at times too. But I have always had blackouts and blacked out a lot of his abuse, pretty much all of it. So I don't know if my brother is being truthful or not. If he wanted to deny it it seems like he would have just denied it.

Now I don't know what to do. WTH do I do?