Is it ok for him to watch porn?

Okay hi, so I'm 17 and my boyfriend is 18 and we're high school sweethearts but I go to Harvard and he goes to Bucknell, in Pennsylvania. I've read a lot of posts on here about girls who get upset when their boyfriends watch porn. I'm unsure of whether I care or not, but I would rather not have my boyfriend looking at/being sexually attracted to other women. Our long distance relationship is very new, and before when we lived 4 minutes apart I know he didn't watch porn and even before we started dating he didn't view it very often. We have a great sex life and a very healthy relationship. So my question is, now that we're 6 hours apart, should I be okay with him watching porn? I can't confirm whether he is or not, but I just want closure in my own mind about whether or not I would be okay with that. Opinions?