I wouldn't give them any. If they said it was over twice, then it's time to move on in life.
How many chances should you give a person when they say it is over twice?
Are you in a parasitic relationship or that person is addicted to you but also don't want to live for their whole life with you. Make it clear, and if its not your side this time then move on.
I'm confused. Is it over? If not than you are seriously being manipulated. This person wants you to be in doubt so you feel confused and needy. Give them the boot.