I really need advice. any advice. please. just help me.

My boyfriend and I had a bit of an argument through texting. We both live with our parents and he wanted to see if we can sleep together sometime, like me spend the night. Neither one of us wants sex before marriage and I trust him and would love to spend the night in his arms. There are a couple of problems. I have horrible, soul twisting nightmares. Which is why I would like for him to be holding me. The biggest problem is that I seem to have sexomnia. I masturbate or try to have sex with other people in my sleep. I have no memory of it but I tend to wake up naked and my parents told me about me playing with myself at night when we shared a hotel room. He knows about it but is adamant it wont happen that one night, and he may be right. But I don't want to risk trying to rape him or something and wake up and have to live with doing that. Anyway, after the argument he just said screw it and went to bed and I have honestly cried so much I had to get another pillow. I really do love him and he is the best boyfriend I have ever had. He is sweet, and caring, and gentle; I just don't know why this has to happen. In the past he has gotten a bit carried away and touched things I wasn't going to allow him to touch and still don't. He made up for it though and was mortified when it sunk in. I am always as fair as I can be to him when it comes to touching me. Somebody please help me. I really want all of this to work out. I will do whatever it takes.