Boyfriend(7 years) porn and other females- help!

Paige
So, yesterday (Valentine's Day) I got home from school (college) and work and made my boyfriend, of 7 years, dinner. While me making dinner by myself is nothing out of the ordinary last night it was rather quiet. I'm used to the tv going, Xbox or him playing with the dog but there was nothing last night. I started looking for him and found him on my bed. When I asked what he was doing his response was, "Pornhub gave free access to their premium Chanel's for Valentine's Day." I simply walked out of the room as I didn't want my chicken that I had worked hard on to burn, at this point for my sake. So today (February 15th) we are in the library working on school work and I turn around to see him looking at an instagram site titled "Doitforstate" where he is commenting on college girls who are scantily dressed or not dressed at all. This all comes after he lied to me about getting a call from a girl that we used to go to school with and his mom is trying to hook them up. Am I paranoid or what?!? I've recently began experiencing depression and this is making it worse because all I do is worry. Help!