Husband secretly watching porn

So I just found out my husband secretly watches porn in the bathroom on his old phone which he has hidden under the sink. I accidentally came across the phone when I was cleaning then I saw pornhub open in his browser. I know some people don’t have an issue with this but it makes me feel sick and feel like I don’t completely know him anymore. It makes me worry that maybe he isn’t attracted to me anymore since my body isn’t the same after having our baby 4 months ago. I don’t know if I should ask him about it or try to let it go. The only problem is when he’s in the bathroom for over 10 mins I know what he’s doing and it bothers me. If he’s feeling turned on why doesn’t he come to me first? I’ve debated just cleaning the bathroom and moving the phone somewhere else then he will have to ask me where it went and then I can ask him why he needs it in the bathroom. We’ve never had a fight before and I don’t really want to start one but I have caught him in quite a few lies and I don’t want him to start to think that it’s okay to lie to me or that I’m dumb and he can fool me easily. Ugh I hate men sometimes.