Ok to be upset?

So was looking through my bfs phone (i do it very rarely when im bored and curious so no im not one of those girls.) but anyways i saw he was searching alot of girls names and then he was searching "expose these smuts" & etc on fb. Also when hes on twitter if he see a naked girls body or something bare he clicks on it. Just makes me think if one if his fb friends posted a pic naked(just saying lol) or sent him one he would look at it. I trust him but i just think why is he looking at other girls when he has me and searching for & doing these things? Idk am i overreacting? Or would you be upset too? I just feel like he doesnt touch/look at me much but he claims he does if i bring something up or if i say you dont look at me hes like i can whenever i want. I just dont know lol i prob sound silly. It just bothers me.