I think my wife is running from the pain of losing our first born

My wife is trying to leave. She agreed to come back and give me a little time. Even said she hopes I can do it. We buried our first born in Jan 13 years ago. She never got past it. So every year around this time, she gets emotional and says she doesn't think she loves me, but then we go back to normal. This time, another guy came in and showed her attention. I'll forgive the cheating if she'll come home.