 In what follows, theories of love are tentatively and hesitantly classified into four types: love as union, love as robust concern, love as valuing, and love as an emotion. It should be clear, however, that particular theories classified under one type sometimes also include, without contradiction, ideas central to other types. The types identified here overlap to some extent, and in some cases classifying particular theories may involve excessive pigeonholing. (Such cases are noted below.) Part of the classificatory problem is that many accounts of love are quasi-reductionistic, understanding love in terms of notions like affection, evaluation, attachment, etc., which themselves never get analyzed. Even when these accounts eschew explicitly reductionistic language, very often little attempt is made to show how one such “aspect” of love is conceptually connected to others. As a result, there is no clear and obvious way to classify particular theories, let alone identify what the relevant classes should be.