Question!

I just woke up, it’s 2:20 am and I caught my boyfriend masturbating. He proceeded to lie to me and then after asking him why he was doing it he said (and I quote), “maybe because I don’t get it enough.” (We do it everyday basically, skip a day sometimes) but What would your reactions be ??? I’m completely speechless honestly and not because of what he was doing but because of his reaction after. I know doing it is part of human nature, but I feel like there’s no point in being an ass all because he got caught by me, his girlfriend of literally 3 years