DEAR ABBY: I need to get something off my chest. My son and his wonderful — or so I thought — girlfriend, just broke up. OK, she dumped him. Out of the blue, with no warning, she slept with another guy and the next day she told my son it was over.

I am devastated! This is a girl I loved. He hadn’t proposed yet, but my son wanted to marry her. She was going to be my daughter-in-law, the mother of my grandchildren — holidays, birthdays, weekends in the park, the beach, our house, their house, the whole nine yards.

Now I don’t know who has cried more, me or my son. I know it’s none of my business and I have to let these two kids work it out for themselves if there is anything salvageable. But Abby, I’m hurting too.