132. Liability of two persons, primarily liable, not affected by arrangement between them that one shall be surety on other ’s default.—Where two persons contract with a third person to undertake a certain liability, and also contract with each other that one of them shall be liable only on the default of the other, the third person not being a party to such contract, the liability of each of such two persons to the third person under the first contract is not affected by the e xistence of the second contract, although such third person may have been aware of its existence.
Illustration A and B make a joint and several promissory note to C. A makes it, in fact, as surety for B, and C knows this at the time when the note is made. The fact that A, to the knowledge of C, made the note as surety for B, is no answer to a suit by C against A upon the note.