He watches porn

So my boyfriend gave me his phone to search something online and i noticed a page opened that said strip club, i asked him what was that about he said it was probably and ad (virus) from other websites he has opened.. i told him I didn’t believe him so i wanted to his his search history i didn’t see the “strip club” website on the history but noticed xvideos website (porn videos) and then chat videos website in the history (not where you type on google, but the little book on the bottom that you click for the recent websites) and what bothered me was the chat website.. he admitted to watching porn but he said he has never used the live cam/chat he said it was from the other pages probably.. i do not know what to do i do not believe him. I looked into the future and i cannot see “a husband of mine” watching live cam videos ect.. porn its not such a big deal but other than that i have a problem i do not know what to believe or what to do.