A loan is generally entirely for the benefit of the borrower, but sometimes it is for the joint benefit of the lender and the borrower and occasionally it is for the exclusive benefit of the lender. Where the loan is for the joint benefit of the lender and the borrower or is for the exclusive benefit of the lender, the responsibility of the borrower is varied and less stringent according to the circumstances and purpose of the loan.
OCGA § 44-12-113