Asking for a friend: My husband has started getting into shape and my friends think he might be cheating. Should I hire a private investigator?

Asking for a friend: My husband has started getting into shape and my friends think he might be cheating. Should I hire a private investigator?

Q: My husband has taken up a new sport with a new group of friends, and while I’m happy for him, I can’t help but be worried. A couple of my friends said that this could be a sign that he is cheating since he is getting in shape and spending time away from me. One of them said they knew another woman who used a private investigator, who discovered an affair. I am so on edge that I am considering it, and my friends want to know if I’m going to do it.