Gail Norton began dating Russell Hoyt under the mistaken impression that he was single. She later learned that he was married, but he repeatedly assured her he was getting a divorce. Six years later, Hoyt convinced Norton to quit her job so that they could travel together. He promised that he would "take care of her for life." The couple lived lavishly all over the world. Hoyt rented Norton an apartment, bought her cars, and repeated his promises to divorce his wife and marry her. He did neither. After 23 years, Hoyt ended the relationship with Norton. On what theory could Norton sue Hoyt? Is she likely to win?