Where adultery is first committed is also where it can be stopped cold. The greatest test of strength for red blooded males is in the heart.
And I would suggest that you don’t stop looking until you go blind or die. However, bragging about it on FB should have caught up with him long before this. I would think that his level of security clearance would have brought some scrutiny during an update. It seemed this FB post was found rather easily, evn if made 4 years ago. They are routine. And do these guys have to file foreign travel briefings when they return from overseas? The ones that ask whether you’ve had foreign contacts while away? They are routine for those with clearances. Lets see where the investigation goes. This was stupid on any number of levels.