I'm not married. I'm early 20's, working on purpose, lifting, doing sports, a lot of hobbies, keeping myself busy. Read book of pook, main sub sidebar, listening regularly to rp podcasts.

I was in a 2.5yrs LTR. It wasn't amazing, we had a lot of disagreements but she checks almost all my boxes for ltr, I really liked her and it started to look like it's leading to life long partnership and maybe marriage in the future.

When covid slowed down she started hanging out with new people and going out again . I never was jealous, didn't even check who she's hanging out with, I always felt like I'm her best option and she's head over heels for me. Then she started disrespecting the shit out of me, wanted a break (I didn't agree, told her a break is a break up) and eventually the disrespect got so bad and she just didn't want to be with me anymore so I left. Later learned she was just brach swinging and of course had a one time thing with Mr Chad from work who I've heard about a lot from her.

This wrecked me, never in my life I thought she'd be able to leave this relationship for a ONS, but I guess AWALT . I went no contact. A month later she comes back and begs me literally every day to come back. She regrets everything, wishes to go back and fix everything, says all the nice stuff you'd want to hear, and that we had a lot of problems then but on top of this she actually gives very good arguments on how she can improve, shows me she works on herself and surprisingly it wasn't just emotional rent. She admits all of her flaws and problems we had "which led her to lose faith in our relationship", shows me she works on them. Her begging every day was in itself surprising given how popular she is and what options she has, but I try not to let this affect me.

I thought some time, eventually gave her another chance (while not letting this affect other areas of my life like purpose or training) because of all the clear logical arguments she gave, and [besides from her wanting too much attention while I'm a busy] it's been going good, she did improve her biggest flaws.

Having said that I wonder if I should forgive her for fucking up a 2.5y LTR for a goddammn ONS. Also I don't know if I can ever trust her like I once did. Since it happened I may have developed some trust issues with people and I still don't know how hard this f'd up my mind but I'm sure it has, I just look at things differently and still occasionally the thought of "how could this bitch do this?" or the thought of her with him jump to my mind and bring me pain.

If AWALT, would most females have done something like this? Is it possible she learned a lesson and would be a good partner? Or naybe after this she's just not good enough ? Is it even possible to move past what she's done and trust her again? Should I even try? I have little experience with other woman, so I would like some thoughts from married or just more experienced guys. Thanks you.

Tldr: 2.5y ltr brach swang and left me for ONS with coworker. Then regrets everything, begs for another chance and shows logical solutions to problems we had and self improvement. Deserves another chance?