sex and don't remember

I went to bed at 10:30 he stayed up to watch the World Series baseball game and at 12:30 when he came to bed he said I looks at him and once he got into bed I started to kiss him and he liked it and then he got on top of me and we had sex but once he said something the next morning to me I told him he way lying cuz I didn't remember but I could tell we must have cuz I was wet down ther from him cumming in me. Like who does that not remember having sex and he said he had to cover my mouth cuz I was loud and he didn't want me to wake the kids.