Dear Abby: My husband’s parents divorced when he was young, and he acquired a beautiful, solitaire diamond from his mother’s engagement ring. The diamond was made into an engagement ring for his first marriage (which, obviously, also ended in divorce).

The pair used to have lunch together and share intimate stories, but now one is on the management track and has left the other behind.

I feel like I got left behind because his priorities changed, and our friendship was left by the wayside. I’m now realizing people shouldn’t have friends at work. Why do I feel such a loss and miss this co-worker who I thought was a friend?