I am in CA. Over a year ago I lent a now ex-boyfriend $15,000+ through the use of a transfer balance convenience check from a credit card so he could make a move from TX to PA. The verbal agreement was that he make timely payments and pay off the balance on the card. The agreement was made in CA (where i reside) and he now lives in PA. His 3 late payments have raised the interest rate on the credit card and affected my credit history. He continues to make tiny payments, but still owes $10,000+ on the card. Can I sue to get the remaining balance? I have e-mail records of each payment made by him. Can I file in CA, or do I have to file in TX or PA?