I’ll admit, there was a bit of awkwardness at the beginning which is probably expected as this was the first time for any of us in this type of interpersonal dynamic. I give all the credit to my wife for navigating us through any initial awkwardness.That's awesome! Sounds like a perfect setup for you, your wife, and him. You're so right about removing the awkwardness. Sometimes I wish I had met my wife's FWB early on just for that reason. Thanks for your response.
I hope that you get to a good understanding with your wife and her FWB.