So watching porn and keeping it a secret?

I personally dont like porn. Dont see a need for it tbh. But i was going through my sons tablet cause my fiance uses it when hes sleeping and I went through the history because my so has been up all hours of the night. Well I went thtough the history and hes been watching porn while Im sleeping. He has always told me he never liked it but Im guessing otherwise. I dont see why he would need pron. I think we have a great sex life. And while looking through the history, I seen he was on craigslist. He was on the personals! For men seeking women and men seeking men. I dont know what to think or even do.