Mr. Balfour promised to pay his wife £30 per month while they were separated due to her health issues. When he stopped payments, she sued to enforce the promise. The lower court ruled in her favor, finding the promise enforceable. However, the appellate court determined that for a promise between spouses to be legally binding, both parties must intend it to be enforceable. Since there was no evidence Mr. Balfour intended a legally binding agreement, the appellate court found the promise was not enforceable.