My (ex) domestic partner and I are having issues over a credit card account. Two years ago when I added him onto my health insurance with my employer we had to show that we were in a committed relationship and financially dependent on each other. We opened a joint checking account, and I added him to (3) of my credit cards as an authorized user and he did the same. We opened a Citi credit card account in his name and added me as an authorized signer. Upon doing so we transferred $2000 from the Citi account to his personal Chase account to pay off the balance. Since I was in a stronger financial position than he was I agreed to pay off the Citicard debt, and outside the $2000 that we transferred to his personal credit card, I mainly used the card so I paid the bill every month. Now since we have broken up I agreed to hold up my end of the bargain and pay off the card, but he doesn't want it to show on his credit report so he contacted Citibank and told them the card was opened in his name fraudulently. I contacted the credit card company and explained the situation to them but my concern is his alleged charge against me. I am in total shock that he would do such a thing to me. I am wondering what my legal position would be in this situation.