Me, about a coworker:: She seems a lot happier lately. I think she got into yoga. Other coworker:: Oh? Maybe she has a new man in her life.
What exactly do you mean by that? Why would her having a man in her life matter to happiness?
Well, the coworker said she was happier. You can't be happy without a man by your side, right? And women are prone to saying they will be happy with what they have so maybe she's lying.
While it may make sense to you and your other co-workers, it isn't very nice to assume that women need a man to be happy. While that could entirely be the reason, assuming that she needs a man to fulfill her happiness is a very outdated thing that could make some people very uncomfortable. Have you thought about how you would feel if people assumed all of your happiness came from another person?
Instead of making such assumptions, I'd suggest you to talk to her and understand her better.