bf saving pics of other girls

My boyfriend and I have been together only a couple months but known each other for 4 years. Today he was going through his phone and I looked over and seen like 7 pics saved on his phone of girls in thongs. He didn't see anything wrong with it at all. I'm not insecure or anything but I know that wouldn't be okay if I saved shirtless pics of guys or anything close to that. Hell, he gets mad when I say some guy on tv is attractive. And also it's not like I don't send him pics that he doesn't have saved on his phone as well. Does anyone else have this problem, and how do you get your point across to them? 😂