Is it okay to feel anger or resentment at this point?

[something fishy]

nice write up

I honestly think you still need to focus on you and all you have done to move on

I think when you have a tough break up and even though you moved on for you I think you knda remained emotionally attached to the relationship that failed...

I honestly think the sharing of email between the girls and then you seeing it knowing well...that it was hurtful says a ton about their low self esteem and lack of acceptance to how hard you have worked

I would even go as far as changing all email and social media so no one from your past could contact you.

I would continue to make yourself more interesting by continuing to work on career goals and learning new things so you meet new people...learn to scuba dive dance wine tasting karate join a gym join a work social group...you'll meet better people with the same interests and goals careers wise...so meet new people would be key

and letting go emotionally although difficult will also be good for you...in so many way..you'd don't need to brag to the X she could not appreciate you then and she will not appreciate you now...this is also why you need to change all social media and never answer her or talk to her...

I had a situation like this and although it hurt I knew moving on for me was key to changing my life for the better.. and once you let go and know you derserve someone who will appreciate you and all you worked towards it will be a wonderful life

*(* good luck