Denny's answer page 4 (63)

Take a break from these sorts of comics. Smut comics/porn are known to have this effect and it happens to a lot of people. Some people call it "porn toxicity" The good thing is after a while of not looking at them this effect will probably be reversed   reply

I think it's up to you if you want to tell him or anyone else so yes it's normal. If you trust him you would feel comfortable telling him though, even if you trust him it's still perfectly fine not to tell him   reply