My wife steals son’s lifeline for her childhood crush

Shawn was a man punching bag in an underground boxing ring for two years, just to save up money for his son Dennis's medical treatment. But every time he got his pay, his wife Maggie would lend the money to her childhood friend Joseph. They got along warmly and intimately, as if they were a real couple. Due to my internal injuries, I couldn't continue boxing to earn money, but when I watched Dennis die because of the lack of treatment fees, I decided to gamble with my frail body.