Wow. That's a hot take...

>He said it was because if he stopped asking for them I'd get suspicious that he was in a relationship.

He lied because he wanted to keep you around as a side piece...

I think for everyone involved, its best you go your seperate ways completely. Its obvious he cannot maintain a reletionship and have you as a friend if he is trying to solicit nudes out of you.

And the gf finding out a close friend turned out to be a FWB, never boils over well.