What does this mean?

My coworker is married, and sometimes she says boyfriend instead of husband. She's been married a couple of years I think? So it could be a simple mistake, right? Only thing is I think once she said husband and boyfriend in the same sentence? Now, I'm not sure on that actually happening, she could have been correcting herself after messing up again lol.

So, that on it's own wouldn't be too weird, but the other day she said soemthing about her boyfriend's wife?? I'm confused and super curious, but don't want to be nosy, lmao.

What do y'all think it means?