Confirmed she is seeing a guy, traveling with him this week after 3.5 years of dating and being broken up about a month already - a lot of ups and downs, many breakups over that time. Promises, I didn't keep on my end, mistakes made etc etc. We aren't together so it's not my place and she is not my property but I am still incredibly upset by this. Yesterday, she poured out on the phone crying to me saying she spoke with her sister and cousins and feels really bad. Saying she never tried as hard as she did for our relationship etc. etc. She was upset that I was sending jabs via social media.

She also confirmed she doesn't really know if she likes the guy, just trying to fill a void of us not being together. aka rebound relationship.

I'm confident I can get her back based on our convo, obviously we still love each other, but part of me lately has been thinking fuck that because she is sharing intimacy with this guy, the Worst part is he is a TOTAL downgrade in all aspects. I know she is not mentally in a good place and she has had past trauma, having a kid young, abuse etc.

I tend to hold grudges and resentment which I am trying to work on. Forgiveness would be the ultimate strength but also at the same time I feel disgusted and sick by it. At the same token, we aren't together so I technically can't say anything.

What would you do or how would you feel? Should I forgive and forget? Should I move on and leave her in the dust?

Perspectives from both sexes are welcome.