Bonnie and Clyde were married for 18 years. Clyde operated an automotive business and Bonnie owned an interest in a fast-food franchise. Five years ago when Bonnie became ill, she requested that Clyde began spending additional time at the franchise to ensure its continued operations. Subsequently Bonnie agreed that if Clyde would devote full time to the franchise, they would operate the business as a partnership. That meant they would equally share in the ownership. According to this agreement, Clyde terminated his automotive business and devoted his efforts on a full-time basis to the franchise. Last month, Bonnie abandoned Clyde for his older brother Buck and denied Clyde any rights in the franchise. Clyde sued to enforce the agreement with Bonnie. Is their agreement enforceable? Under what theory? Who prevails, and why?