Something else to point out. You mention being angry that x is prancing about acting carefree and happy. It might be interesting to think differently about that. For one thing I've noticed that some people try too hard to be happy. Why? Because they aren't. But they keep trying like a fish swimming upstream. Does it mean they are happy and content? Nope.
Another of interest - anyone that walks into their life and takes them away from a long family relationship or walks away from one is subject to that happening to them. That scares the cr*p out of them. Try and be content knowing what you did to somebody could happen to you and that you would deserve it in some way
I post that not to be angry or vindictive. I actually think along those lines sometimes to be empathetic. I know she was mean and nasty to me, and tries/tried to hurt me in every way she could. She even wanted me to end the relationship. But I don't hate and don't wish her any ill will. I hope she does well. I hope she finds the happiness she so desparately and frantically is looking for.
Practice the forgiveness. Look past the facade. See the truth in the situation and embrace it. Understand that the symptoms are not the same as the cause. And keep your head up high. You may just be an inspiration for somebody else that very much needs it.
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."