What do y’all think?

ok so my bf and I have been dating for almost a year now. we don’t have each other added on facebook bc we both don’t use it actively. just occasionally. his account is usually deactivated but today I decided to just search for it. it was there so I clicked it. I saw that he has some pictures of his ex and him still on there. ik it’s his past but why didn’t he deleted them...?? I can’t say anything otherwise he’ll know I was stalking. I feel like if I could get him to show me his fb while we hangout like ask him to show me old pictures of him in middle school, maybe it’ll pop up and I can address it. but until then, is this something to be bothered by??