acrimony the movie

I had been hearing about acrimony the movie from virtually everyone I had around me and decided to watch it. Surprisingly, I found it intriguing and fascinating.
The movie was about a rich girl who gave her all to a guy(poor), the guy cheated on her and it resulted in an a fight which made the girl loose her womb. The guy realizing what he had done regretted his actions and decided to marry the girl... Eventually they became broke and the girl had to work two jobs while the man was just at home working on a project which he did for 18 years without a job. This made the girls sister hate him and persuaded the girl to eventually divorce him, because she saw a purse of, another lady in his truck but he denied that he just went to discuss his project.
Moments after the divorce, he had a breakthrough and became extremely wealthy, although divorced he went back to his ex wife with a cheque of 10million naira saying how sorry he was and he always loved her and never cheated on her again. Then she realized she made a huge mistake and decided to get him back only to find out he had gotten engaged to another woman, she tried killing them only for her to get killed eventually..
Now, the question on peoples mouth is who is to be blamed? The man, who cheated on her first and didn't work for 20 years, or the woman who drove him Out of the house