(1) Any promise in writing to furnish support for a child growing out of a supposed or alleged father and child relationship does not require consideration and is enforceable according to its terms, subject to 40-6-107 (4).
(2) In the best interest of the child or the mother, the court may, and upon the promisor's request shall, order the promise to be kept in confidence and designate a person or agency to receive and disburse on behalf of the child all amounts paid in performance of the promise.