What if this happened to me?

What do you do when you find out that your husband is getting very close with another woman at work? And that he and the other lady have already confessed to each other that they have some kind of chemistry between them?

My best friend asked me this question last night. I was stunned.

I told her that I have no answer to her question.

What WOULD any normal wife do??? What would I do if this happened to me????