its common for the average guy to look at porn periodically, the difference is the average guy wouldnt do it there next to you and if they can have it with you they will instead of relying on porn.. his flippant attitude about your concerns over it tells me he is becoming addictedto it and that will lead himdown a dark path of other sick perverted things.. mine does this, he constantly had porn on his phone, would watch it all the time,,didnt matter what i thought about it,, when they defend it with such aggression it means something more is going on.. its another form of addiction..if it bothers you then its a problem..he is not respecting your wishes or validating your feelings about it..just thinking about himself ..