My boyfriend is a pedophile

as awkward as this is going to be, i think that you're now going to have to broach this with your boyfriend. my tack would be something along the lines of 'do you remember when your ex was ... well, i'm very sorry but i looked at your phone ... and i found pictures off ... and now i'm confused because i don't know what's really going on anymore'. i figure that if you leave it open-ended, you won't appear to be jumping to conclusions or making accusations. try to keep calm and not say anything too emotional. anyway, best of luck. i hope that this works out alright for you.