THA,
Please listen to Coach. This is very important that you start boundary setting asap. The anger/hate you are feeling is very valid... you have been betrayed! But, what you need to do is acknowledge that anger, and use it to stand up for yourself by setting boundaries. Don't use it to lash out or seek revenge. That will only hurt you more in the long run. Use it to love yourself by deciding what you will NOT tolerate anymore and communicating clearly and calmly to your H what those boundaries are.

The OW in my sitch is 23, flakey, self centered and moody. I hear you, my friend.

My anger somedays overwhelms me. But, when that happens... I feel it, acknowledge it, vent it (if I am alone).. then I shake it off, release it and allow it to give me STRENGTH to continue to set and maintain boundaries with my H.

You can do this!
Rocked