Sleep Sex/Sexsomnia in a relationship

So this is going to be a bit tmi and personal I’m just really bother by it and I don’t know what to do.

So my bf talks in his sleep and he use to sleep walk. He does this other thing where he masturbates in his sleep and touch me in his sleep.. it’s gotten to the point where he ends up fucking me in his sleep while I’m asleep.

In college I was touched by someone who was a “friend” and it took me a while to get past that... my boyfriend knows that.

I’ve told his countless times that I don’t want him to do that in my sleep but he still does.

He claims he doesn’t know what’s going on until he’s fucking me and then that’s when I wake up and he doesn’t stop what he’s doing.

When we wake up he asks me how it was and I tell him I didn’t like it and I didn’t want it.

And all he does is say “sorry, it won’t happen again”

That’s it. Nothing else. As if he doesn’t give a fuck about how I deel and how violated I feel.

We’ve tried melatonin to help but it still continues. Usually happens when he’s really tired.

I’m even more bothered by it because after I have sex I’m in pain for a couple days after and sorry is all I get.