Unfortunately, once you co-sign on a loan, you are responsible in the event the other party does not pay. By co-signing you are saying that you will pay if the other party does not pay. The only recourse is that if you are sued and forced to pay, then you can file a suit, or name the other party as a third party in the suit against you, and seek reimbursement from that party. Other than that, the only thing you can do is try to get the father to take a loan and get you out from under the original loan.
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