Hello, my boyfriend has started waking me up in the middle of the night with an erection and wanting sex, he says he cant remember and I have to wake him up whilst he is doing it to prove to him.

Last night he did it and was kissing me and then started saying ''i really like you''. This made me feel like he didn't know who I was so I started asking him to say my name, he started saying ''i really like you'' again and then eventually did say my name and a nickname we use together. He is really embarrased about this and says he can not remember and that he is not even having sexual dreams or any sexual thoughts. I am really worried and feel paranoid, is this a common thing he is doing????