Can you tell your colleagues about the unhappy marriage?

You don't have to tell your colleagues about the unfortunate marriage, because it's no use telling them. You can tell one or two colleagues who have a good relationship with you as the object to talk to. If you tell them, people may care about you and give you advice, and you will feel better. This is ok, but it may not be a good thing for you to tell your colleagues, and others will laugh at you.