I'm not going to give my boyfriend any money
Why won't you give him any money?
He cheated on me and does not deserve it.
You are never required to give or donate money, especially to someone who has wrong you. Be careful giving out money.
I'm doing it because he deserves to be punished.
You should break up with him and end the relationship. They have abandoned you and wronged you. You don't need to give them anything ever again.