What an idiot.
So many fish in the sea, yet he becomes obsessed with someone who is ugly and completely unattractive, with her face practically a smidgen above '0.'
Comparatively, his face is at least a '7.4-7.8,' but alas—sadly, he's thrice the idiot: blind, stupid, and a criminal who cannot control his jealousy and rage.
That's why a wise man doesn't put his eggs in one basket—and thinks of repercussions *first.*
What a moron.
Nobody should be murdered in cold blood, but a smart man would've been thankful for the felicitous opportunity (the infidelity) to move on, and would've gladly sought greener pastures and more attractive vistas elsewhere.

First, for 90% of men, getting ANY chick is difficult.
17 year age gap is a coup for a late 40s guy and good chance he'll never get another shot at that relatively fresh