Why does everyone assume he's gonna put my pics online?!?

My bf and I haven't talked in like 3 weeks so I guess we kinda broke up idk but I've been wondering if he still has all the pictures I sent him.. And in the 4 months we've been together I've sent him so many its not even funny. I mean close to 50 just this month. But I emailed a lot of them cuz they didn't work on his phone and sometimes he wouldn't get them. WHERE DID THEY GO?! That seriously freaks me out. And my face was in a lot cuz they were just for him. But why does everyone say I'll be seeing my pics on the Internet? Where?!