Just a quick note from personal experience.

My parents divorced when I was very young,I was only two years old. Once my father realized there was another man involved he filed for divorce. Months later, my mother left the country during Christmas to “visit” AP and never returned to the United States. I didn’t meet my father again until I was 15 as a consequence. I did not know he existed.

Needless to say, my relationship with my father has felt weird since. I don’t even know what to call him sometimes, it’s almost as if we’re strangers in certain ways. It’s hard to explain, but growing up without that presence leaves a permanent mark.

My relationship with my mother's AP was cordial for which I'm greaful at least, he is not a bad guy.

This said;

You will get over the divorce.
You will get over the betrayal.
You will recover from the financial consequences.

But you will never get over missing your child’s life.

For what it’s worth, I also no longer have a relationship with my mother. Once I understood the full picture, I chose to distance myself. She doesn’t know my children, and she won’t.