Dear Abby: My boring marriage led to an affair with a married woman who then proceeded to abandon me

DEAR ABBY: I’m a 55-year-old man who dated a very special lady, “Dawn,” for 12 years. We were both married when we met. I fell in love with her, and after we divorced our spouses, we continued being together. 

I have two kids. Dawn didn’t get along with the older one. My daughter wasn’t rude, but she obviously didn’t like Dawn. I proposed to Dawn, and she accepted. Over the next few months, she became agitated and threw her engagement ring back at me. I kept it until we figured things out.