She originally accused me of having an PA with a MALE friend of ours.
Any chance this could be her OM??
I ask because early on in affairs (especially EAs), before the betrayed spouse finds out and before the cheating spouse gets confronted or exposed, the cheating spouse will often get their "fix" -- their "rush" -- by talking about their OP to their spouse. Then, as their affair progresses and/or as it's exposed, they of course will clam up.