Stetson's Lady (Diamond Ring Book 1)

Stetson knew Mesa was back in town, but what he didn’t expect was to find her in the arms of his nemesis. He’s been rescuing his little sister’s best friend, Mesa, since she was a tomboy in pigtails. To his amazement, the little girl who drove him crazy is all grown up and Stetson finds he doesn’t have the will power to resist her any longer.