I’m not in the Marines and I have never been in the military. As I understand it, however, there is a fairly ironclad rule: thou shalt not mess around with a fellow Marine’s wife. Period. Apparently, one Marine forgot this rule.
Warning: Foul language ahead
I don’t know if this returning Marine halfway expected to see this as he didn’t seem supremely surprised. In either case, I’m sure he will make it his goal to identify the cowardly Marine and make other Marines aware of this breach of etiquette.