"Jurors decided, after two days of testimony, that Ralph Wald, 70, was justified in killing Walter Conley when Wald arrived home one night to find Conley, 32, having sex with Walds wife, Johnna Lynn Flores. Wald testified he shot Conley in the head and chest because he thought the younger man was an intruder who was raping the 41-year-old Flores."
70/2 +7 = 42.
The creepy-calculator's still got it!
Anyways, it's certainly a possibility. I know a number of women who've cheated on men for whom that kind of violent / erratic behavior is one of the factors that led up to the woman wanting to cheat.