I remember sitting all alone in my room listening to vinyls back in the day and wondering why my father never bought my mother a wedding ring. It wasn't like it was a terribly expensive thing to do. He had plenty of money to keep her in cigarettes and booze.
When I got a chance, I asked him. He clammed up and didn't reply. In fact, he didn't speak to me for days, until sobbing and afraid, I approached him and demanded to know what I had done wrong. I suppose it is hard to stay mad at a child (even when she is a teenager and more grown than infant, at least in appearance). Even his face softened and he relented and pulled me onto his lap to offer forgiveness and to ask for it in return.
That was probably the hardest thing to do in my life (ask for it) and hard for him to do (give it) but it taught me a great lesson.
Keep your nose out of other people's business.