I think someone used my girlfriend's nudes to catfish people
 

I've posted some of my girlfriend's nudes here and on other sites and one day I decided to do some reverse image searches to see if they'd been re-uploaded. And sure enough I find a profile on another site that had shared them. The weird thing though was they were acting as if they were the one in the images. Even their pfp was of my girlfriend raising her bra. It was pretty funny. The images all had titles like "my ass" or "my mirror selfie". It was kinda a funny. I tried to message them to see what the point of it was but their account has since disappeared, although image searches will still show it you'll get an error if you try to follow links to the old account. Just a funny story

Reverse image post?
 

How do you do this search?

Thanks