Yep, don't do it if you don't want to, end of story. Personally I never saw the appeal of doing in the butt, that's just me though. He does need to drop it. If you ever feel ready, and only if you ever do, you can bring it up.
There's some things I want to do, but my wife has no desire or interest to try them. So I never mentioned them again. One of them though she decided she would like to try, so we did and she liked it. Simple, mutual respect for each other, works wonders it does.

Yeah, if he keeps pushing for it, hes a fucken sicko. Girl, kick him out the door. He does value your feelings or your body. Please value yourself and lose the loser.

It sounds like you tried it in some way or other and you didn't like it so it didn't quite end up happening. That is more than ok. Like said above, its your body and if he keeps pestering you after you said its off the table for good, than there is something wrong with him. Especially since he was raped in his past if it seems to you that he has a fixation about doing it, that sounds like he hasn't dealt with his past and needs to go talk to a professional. P.S you aren't missing anything! haha, even my good friend since high school said she has done it a few times and she liked it but she didn't like it enough to keep it in rotation lol. Tell him to stop asking.

I love anal but would not love anyone pressuring me to do something I don't want to with my body. I would try most things, some I would not need to finish trying before knowing for certain that I don't like it. Sounds like you found that out yourself.
The tissue back there is also super sensitive, super fragile and not super flexible. If you are not into it it will never feel good. Period. I know people that 'practice' for months before going for anal sex anyway. A finger or tongue on the outside for a week or so, eventually a pinky with lots of lube for a week and a half or so...slowly getting your body into the idea. And those are people that already know they want to do it. Maybe he is trying to reclaim his body and memories by having anal sex with you. That doesn't make him weird or an as$hole. Pressuring you does.

I love anal but would not love anyone pressuring me to do something I don't want to with my body. I would try most things, some I would not need to finish trying before knowing for certain that I don't like it. Sounds like you found that out yourself.
The tissue back there is also super sensitive, super fragile and not super flexible. If you are not into it it will never feel good. Period. I know people that 'practice' for months before going for anal sex anyway. A finger or tongue on the outside for a week or so, eventually a pinky with lots of lube for a week and a half or so...slowly getting your body into the idea. And those are people that already know they want to do it. Maybe he is trying to reclaim his body and memories by having anal sex with you. That doesn't make him weird or an as$hole. Pressuring you does.