I'm ending a friendship over an argument where he ignored data to disagree with me
Are you sure that he knew the data was there?
He is aware but he still chose to argue with me.
It is difficult to end a friendship but sometimes there is no other option. There might not be anything you can do to fix the relationship and it is okay to end it instead of continuing something that doesn't work.
I actually wanted you to tell me something that I can do to keep this relationship.
It's good that you want to reconsider ending the relationship. All relationships will come with disagreements. Sometimes it's best to agree to disagree in order to save the connection.