I have been messing with my wife for the last 6 months
What drives you to mess with your wife?
I want to break up with her.
If you want to break up with someone, then you don't mess with them just to be inconsiderate. Let them go and move on with your life.
I don't think she will allow a divorce.
You should be more mature and talk to her. Messing with her won't help.