[F] Putting my frenemy [F] on the hot seat

My frenemy and I both live in a large city in North America but we are both from originally from the middle east and come from conservative families. She is 26 and and I am 25. I say frenemy because even though she considers me her friend and we hang out a lot together, I don’t really consider her my friend. The reason is that in college, she betrayed me by cheating on me with my bf at the time. I found out accidentally because we both dated in “secret” since our families are conservative, I never told anyone about it. She does not know to this day that I know what she did.

Fast forward to about two years ago. I made a bet with her (on a hockey game) and the loser of the bet would have to give a semi-nude picture to the winner which they could use however they wanted. We both agreed to this and took the pictures in advance to make sure no one backed down. I ended up winning but decided to just keep the picture with me for now (even though she is dying to know what I plan to do with it).