Let's not get it twisted. Cheating is no reason for murder, but the idea that there's nothing wrong with a married man getting "side p*ssy" is deplorable.
Culturally, lots of people practice polygamy and are fine with it, but in ALL of those cases of polygamy, the man is taking care of the women he is having sex with/impregnating. He claims her, she is not a "side hoe" or hidden. She is respected as a wife.
Nothing wrong with having multiple wives, but handle your business. Don't try to low key have your cake and eat it too, which is exactly what this dude was doing.
If you wanna do dirty low key slick sh*t while married, prepare for your wife to do the same to you.