Relationship help, this isnt a joke?

I have been dating my boyfriend for 6 months and a few weeks and naturally we've been going to the movies alot and stuff like that for our dates. I've noticed though that every movie we see, (we have rented a few ones too, so its not just going out to the movies) has had ridiculous nudity in it (Harold and Kumar go to white castle, Wild things. amoungst other ones...). This is really bothering me because i feel like hes "desiring" other womens. We have already argued badly about this, am i overreacting?? please i need some advice.