Oh, ffs!
If you have a really good female friend that you talk to then why do you find it so awful that your wife has been talking to other men? Surely she does so because you are too involved with your "friend" to pay your wife much attention.
Seriously... get a divorce and stop being ridiculously silly. Do you seriously think someone that would cheat knowing that you're married is going to make a good longterm partner? Use your big head and quit thinking with the one you hold when you pee.
“The willingness to accept responsibility for one’s own life is the source from which self-respect springs.” ~Joan Didion