Found naughty pictures on boyfriend's cell phone?

[Rach]

My boyfriend and I were hanging at a friends house tonight and i was just looking at things on his phone. I found some naughty pictures and i didn't like that. This offended me only because he's always been the type to not look at stuff like that or have pictures like that on his phone when he has a girlfriend. He's always been pretty respectful to me, never cheats on me or anything.They weren't pictures of naked women they were just real sexy models with huge boobs in bikinis. I asked him what those were doing on his phone and if that's what he wants me to look like. He couldn't give me a straight answer on why he had them on his phone (of course, because what excuse would be good enough?). He told me to not freak out about it because they're "just pictures". I don't understand why guys can't understand why it's so offensive to a girl to have her boyfriend look at that stuff. It now makes me worry if he looks at that stuff more behind my back. Do any of yall think overreacting?