After her bff, my wife, goes to bed [MF cheat]

I know this isn’t true literature but I wanted to put this out there. Maybe she’ll see it? My wife’s bff and I have sex talks especially because our spouses are so different from us in that department. One drunken night we admitted that we could fool around with each other for fun. There’s trust and respect there, but our attraction is basically limited to “I care about you as a friend but I’ve never emotionally seen you as anything more.”
Well with quarantine, I’ve let my imagination wander into what I would do with her.