A quiz on whether a husband loves his wife would have questions about fidelity, attraction and consideration. Although imperfect, a quiz can be a good way to gauge the interest of a spouse whose motivations seem unclear. An example of a quiz can be found at http://quiz.lovetoknow.com/Does_My_Husband_Really_Love_Me_Quiz.
Although quizzes to decide if a spouse still loves their partner are available, the results should not be taken seriously. If an issue such as this exists in a relationship, relationship counseling or having a serious talk with the partner may be a more appropriate cause of action.