I always love Tyler Perry's movie and i believe Acrimony is very much okay.
But i personally see nothing wrong in what Robert did. He was faithful to his wife and didn't cheat on her, and also he didn't ask for the divorce, Melinda did. But when he tried to stop it from happening, her sister was there to add fuel to the fire. If i recall correctly, Melinda mentioned that she regret listening to her sister after Robert paid her a visit at work and dropped her a cheque of $10M and the key to her mama's house. And any blind person could see the regret on Melinda's face.
All of this happened because she was impatient and couldn't control herself plus her sisters Misled her..
If there is one thing people should learn from this movie, it will be that in life, no condition is permanent and we should learn to be patient no matter what coz nothing good comes easy.
In my opinion, i don't think this is what u call love, i call it obsession.
Diana cant be blamed for Melinda's action. She pushed Robert out and Diana was there to welcome him and gave him all the support he needed and she was patient with him. Melinda should have listened to her friends advise at work and be patient a little bit longer. Everything could have been hers just like Robert promised but she messed up real bad.
In the end, Melinda alone deserves to die not the poor Robert. Coz he sincerely did nothing wrong.