I'm sure this has been asked loads of times, so I apologize if redundant.
I want to tell my AP's girlfriend about his infidelity.
Here is the breakdown. I had a very emotional connection with AP that lasted for a few years. I know way too many of his secrets, and I feel I know way too much about his girlfriend. I doubt their situation is rare; she doesn't enjoy sex and he does, he rarely got it from her so he goes looking elsewhere for that, which is how he found me and some girls after me. I was his first "cheat". He never got caught, but I fessed up to my BH. AP always told me that he would not want to cheat once he married her, like he could start fresh and make a real promise to her. I know that's BS. Anyway, that was his idea. And guess what, that was in 2017 and they are still not engaged. I believe they have been together for a decade. He is dragging her ass along. By the way, I never saw him as a potential life partner. So my intentions are not to break them up, even though she will probably not stay with him if she believes me.
I want to tell her because obviously she has a right to know. But also because I still feel a connection with this loser! For some sick reason I don't want to damage the sultry, fun, secret adventure he had with me in his mind (and mine!). I don't even want to see him again, so why do I have to keep this connection intact? The answer is: I don't. I don't need him to have fond memories of me, to be daydreaming about me, or to even desire me ever again. In fact it might be nice if he hated me. I don't hate him but I do have mixed feelings. I'd like to feel disgusted with him at some point.
I know how to get into his secret email because he once shared his password with me. That is where he kept all his secret photos of me and other secret affair paraphernalia. After I ended things, I told him to change his password. I recently found out all he did was add another character to the password. Yes, I went in so I could dig up dirt on him so I had ammo to tell his girlfriend. And guess what. He still has photos of me in there and I can see he has been with at least 3 other girls since me and I bet there's actually even more! I never knew, but he is a serial cheater.
Something else important:
I don't want to use my photos as ammo, I prefer to be anonymous. I don't really need any more drama in my life than there already is, I don't want MORE backlash from this affair. I hope AP doesn't have any other places he stores those photos. I don't want him to know that I'm the one who told his girlfriend, while he still has photos of me, and sends them all to my BH out of revenge. My BH hasn't seen those particular photos and I don't see any reason why he would need to! BH knows what I've done, why make it worse by making him look at images to go with his imagination? But that would mean it would be harder to prove to her that I'm being truthful.
So then shall I delete my stuff from his email (I want to anyway), and in the same day secretly message her to log into his secret email? Or do I just suck it up, and tell her from myself what we did and let her figure out the rest? Either way he will know it was me who blew it for him. Or, I stay anonymous and find some other way to prove it?
I should not leave it alone though, right?