You could ask him if he knows any cases of sexsomnia or other somnias in his family. If yes he should get testet because as you told us, this effects his and your life.
You could also test it. Lay down naked next to him but don't fall asleep. Pretend to be asleep. If he does it again confront him. And if you feel he did it on purpose throw him out. But do the first thing first. Maybe he just get's tested for sexsomnia and then you know if he is ill or a liar.
If he crossed your line, really throw him out, that is unacceptable.
You could also test it. Lay down naked next to him but don't fall asleep. Pretend to be asleep. If he does it again confront him. And if you feel he did it on purpose throw him out. But do the first thing first. Maybe he just get's tested for sexsomnia and then you know if he is ill or a liar.
If he crossed your line, really throw him out, that is unacceptable.
curious open-minded short but not so short guy from Germany. open for conversations/PMs, all topics, all ages, all genders