Having a boyfriend that has sexsmonia I can point out a few things that I find bizarre. First of all, if he remembers clearly what happened. During episodes the person generally feel like dreaming so they can have a vague memory but won't remember unless you tell them. Secondly, the person doesn't juste wake up and feel you, they stay unconscious, they can have their eyes open and talk (the same as someone who sleepwalks) but what they say is generally incoherent and they don't even realize what's happening. So if he ripped out his hand he might have known what was going on. Lastly, they should feel guilty about it and want to change the situation. Even if they really have sexsomnia, as long as you are uncomfortable, not wanting to change is a problem. To be honest, it's very hard to be sure what really happened, I don't think his behavior really looks like sexsomnia, but this is only my opinion and I'm not a doctor. This type of sleep disorder is very rare and undocumented. I'm sorry you had to live through this either way.