First Post, She just Left, Very unsure

[Shrike]

I hope I am doing the right thing. I think I may have made to many mistakes or lost too much ground to hope she'll want me again. But maybe its meant to be this way.

Below is not what I should of done, I did not detach and let my emotions rule my actions:
When should told me about OM I unfriended and blocked on all social media. This was out of anger. I posted some nasty stuff about killing the part of you that thinks it cant survive without someone else. This apparently upset her.

and then...
Last night, we met to swap off the daughter, I think or I hope I did better.
I didn't cry I didn't yell. I acted as calmly as possible.

The conversation as best as I remember it:
She started crying and asked how I could post something like that. And that she would never cheat on me, that's not who she is. And that she would not talk to him any more because it wasn't worth me being upset with her. And that this is why she didn't want to say anything about it to me in the first place.
She says they just have been small talking, nothing else.

I asked how she expects me to believe that or why she even cares if I believe that, because she already chose to leave. ( but Especially with what he said to her the prior year. The way he talks looks like he is trying to swoop in a marry her asap. I didnt say this..)

i said that she was free to do what she wanted, but that she had to realize there is always things that will happen in response to that. i told her i didnt really believe that she wasnt involved with him or that she would stop.

this made her very upset and she cried and said that now everyone is going to think that she slept around on me and she didnt. and that me acting this way hurt her so bad.

i said, thats not on me, if you feel guilty thats you, i said i thought i could wait around for you to figure out what you needed to be happy, but i cant. I cant sit back and be your shoulder to cry on.

she said i forced her to make the decision to leave and its partly my fault and that she didnt expect me to wait, never expected me to.

i said then i guess im just saying it to hear it for myself.

i told her again she is free to do what she wants, and that i was very serious about cutting my self off emotionally from her.

she said ok thats fine, then we kind of small talked about our daughter, said our goodbyes and that was that.