I've caught my boyfriend of five months on multiple occasions masturbating in bed right next to me. I get very offended and angry because I would much rather have him wake me up to take care of it. I've told him this. He always denies it completely and makes it sound like I'm delusional for even thinking that he would do such a thing. I feel like he switched it to make me the bad person so he doesn't feel guilty. I'm just not sure what to do about it.