Graham O'Hanlon, without any mention of payment, helped his friend, Patricia Tippon, move from Westerville to Pepper Pike. The entire move took 48 hours to complete.
At the end of the day, after she was in her new house, Tippon told O'Hanlon that she'd give him $200 for helping her move. Is Tippon's promise to O'Hanlon enforceable? Why or why not?