GM, it's awesome that you're comfortable being forthcoming with your coworkers. I'm not (right now), and my opinion of what to say to them changes daily. Here's my latest:
Coworker: Oh, (implied: you're not wearing your wedding ring and the photos of Mr. A are all down), how's Mr. A?
Me: We split. So what can I do for you?
HAHAHA! I'm cracking up writing that because I know I will NEVER have the guts to say it!! But it sure is fun to think about it!!!
P.S. That might not sound so outrageous to everyone, but to me it would be HUGE!