Boyfriend sexually touched me while sleeping

I woke up in the middle of the night with my bf stimulating my clit while I was asleep, when I asked what he was doing he sounded confused and started to cry and apologize, but we fell asleep right after.

I felt really violated by that and brought it up in the morning to have a serious conversation about it, and he immediately turned pale, panicked and started shaking and crying because he didn’t remember anything and he’s been really sad about it all day and even talked about being so disgusted about what he did that he wanted to kill himself and was basically begging me to leave him…

He’s had some episodes of sleep-walking as a child when he had high fevers, but it stopped years ago.

Obviously I felt violated and thought he was lying when we started talking, but as the conversation went on, he really didn’t remember a thing, and now I don’t feel as bothered as before, I’m just scared it happens again since he has no control or judgment when he’s in this situation and I really don’t want to go through this again :(

I asked him to book a therapy session to figure out what made him do it and get help, and he agreed 100%, he’s doing it this week

Has anyone been through something similar or has any advice? 🥺