Many stories come up like this in many parts of thailand,I know one thing don,t do this to a thai lady or man.don,t upset thais in a bar also.Either the man or woman could stab or shoot you anywhere.He shot the lover but not the wife who was doing the cheating,I also think he shot the wrong person.
Once i was in Syria travelling in homs a city i just left they was a public hanging of his wife and the lover.He wanted to clear his family name or shame of what the wife did,that was the law and it did happen.