It's medicine bruh. It's painful but necessary. If you thought that thought every time you went to kiss her, would you still be with her? And I'm not clowning you, but God gave us balls for a reason. A man shouldn't be getting this trapped in a spell over someone that cuckholded him with not just some random dude, but a random dude she has (fukk "had") feelings for. And to top it all off, after catching a concussion and walking back to you with a limp from sucking and fukking this dude so hard, you took your boobie bear back with open arms like a sucker. And what do you get in reward for that? A chick who lets herself go to the point you're not even attracted to her anymore.
This is your LIFE nikka. You're wasting precious time stuck to a chick that let another nikka hit raw (it's an ex and "feelings" came back. You REALLY think they spent time fumbling around for condoms?). You love her and it's gonna hurt breh, but it's flat out unintelligent to stay with her just for the sake of comfort. Matter of fact, if I was your boy and I fukked this girl, you'd probably stop being friends with me but stay with her, wouldn't you? That shows she has you in a spell on some straight p*ssy boy sucker shyt.
She got your mind dog. You're better than this. Most of us have been there before, so I say this with love...
Stop being a bytch and get your life back