<human>: Hi Reddit, I'm gonna make this as short as I can. Me and my best friend have known each other since elementary school. We are both homosexual, however we have no romantic feelings for each other.

When I was a christian (now Athiest) I was taken advantage of by an older church member (a choir teacher) and it has been in the back of my mind, even today it still bothers me. Well, he knows about it, and is the ONLY one who knows, not even my parents know.

The other day, he stayed at my place because him and his SO recently broke up, and he needed to get away for a while (no problem right?). Well, I was showering, and he came into the bathroom as I was drying off. He saw me naked. This isn't anything new, we've seen each other nude many times but what he said made me absolutely want to just DIE.

"Man, that teacher did a pretty bad job, your ass is tight!"

I...don't even....wow. I want to just hide for a good month now. I can't believe he'd bring up something from my past just to make a joke. I haven't said a word to him since. I don't know how to make him realize how upset I was...what should I do reddit? :(

Give me the gist of the text in a nutshell
<bot>: Friend accidently saw me naked and made a hurtful joke about me being raped as a child. I feel disgusted. What should I do?