boyfriend looking at Instagram a

Oh hi so I need some help on whether or not I'm being crazy. Was looking at my boyfriends phone and his like top searches on Instagram were two girls we know, one of which posts particularly risqué photos. (More power to her obviously not hating on her, just don't want me boyfriend to be looking at it). It especially bothered me bc it's not people he's even friends with, it's just attractive girls we used to go to school with