DP has been very cagey with his phone for the past couple of months. Last night, I looked over while we were sitting on the sofa and saw him scrolling through nudes of various women on a Telegram chat group. This morning, I looked at his phone's notifications and saw lots of messages from said group. Googled and found a post talking about it. I'm pretty sure it's the same group — there are loads of others but this one uses the same phrasing as the title of the one he's in — and apparently to join and remain a member of the group you'd have to upload nudes of women from time to time!
Confronted DP and he said that almost everyone there just shares nudes they see on reddit (what he did) and you "only" have to share photos when you join but I am fucking scared he used ones of me. There are tens of thousands of people in this group and it's UK based ffs. He's left the group but I don't know if he's in others as there's so many similar ones with similar "rules" and it all makes me sick.
Is there a way I can make sure he deletes all my nudes, no backups, none saved in the cloud or something, before I break up with him? He thinks we're ok now and I don't want him to get suspicious.