The guy was fooling around with his wife, in his house, to me that is enough to say the shots were warranted. You come to my house in a threatening manner and I may give you a chance to turn around and leave but you better make up your mind REAL fast.
I think that it is really cool for the guy that he was able to kill him three times. There won’t be many people that will want to fool around with his wife if they know they are going to get killed three times.
As noted elsewhere in the thread, the guy who got shot was the husband, who came over to the boyfriend’s house.
It's a fairly complex plot but there are people who imagine there's always a new way to steal, or a new way to murder, and get away with it.
This one will eventually have a different outcome.