HELP.

So my boyfriend sometimes gets tooth pain. He takes Tylenol PMS. Only 4, he never goes past that. He doesn't have a high sex drive, but I do. We've been together for 2 years as of June 2nd. Last night he took 4 for his tooth pain. He woke up at 1am and wanted to have sex. I turned him down because I knew he wasn't awake lol. He went back to bed and woke up at 2am and tried again. The third time I was awake playing a game on my phone and I looked over that him and he was asleep touching himself. He has no memory of this. he stopped and went to bed 2 minutes later. Is there a reason he wakes up through out the night and does this?