Boyfriends porn addiction?

Hi in need of some advice its serious enough to risk losing my family. Now normally,porn doesnt bother me,i watch it i've known my boyfriend to years watches it and it hasnt bothered me. Well,about a year ago he cheated,things have been fine since,trust issues of course but we're working on it. We even have a 3 week old baby girl.Well....we've been living together for about 6 months now and since i've seen a couple times where hes looked at porn at about 7 oclock at night when im sitting in the same room ( our kitchen an living room is basically one and the computer is in the kitchen). Well i looked in his history again today and its been almost every night this week he's looked at a time when im just sitting there....and the times he's looking at midnight or later has becomes tons of websites and i even saw a live cam site....like i said it never bothered me but this...to me just seems to much. Why does he need to watch in the middle of the day with me sitting there when he can have me? Im an attractive girl and our sex has always been great. I just cant understand this and just like the cheating it is making me feel terrible about myself and he doesnt have much to say about it which makes it worse....help :/