Homoeroticism is sexual attraction between members of the same sex, either male–male or female–female. The concept differs from the concept of homosexuality: it refers specifically to the desire itself, which can be temporary, whereas "homosexuality" implies a more permanent state of identity or sexual orientation. It has been depicted or manifested throughout the history of the visual arts and literature and can also be found in performative forms; from theatre to the theatricality of uniformed movements (e.g., the Wandervogel and Gemeinschaft der Eigenen). According to the Oxford English Dictionary, it is "pertaining to or characterized by a tendency for erotic emotions to be centered on a person of the same sex; or pertaining to a homo-erotic person."
This is a relatively recent dichotomy that has been studied in the earliest times of ancient poetry to modern drama by modern scholars. Thus, scholars have analyzed the historical context in many homoerotic representations such as classical mythology, Renaissance literature, paintings and vase-paintings of ancient Greece and Ancient Roman pottery.
Though homoeroticism can differ from the interpersonal homoerotic — as a set of artistic and performative traditions, in which such feelings can be embodied in culture and thus expressed into the wider society — some authors have cited the influence of personal experiences in ancient authors such as Catullus, Tibullus and Propertius in their homoerotic poetry.
The term "homoerotic" carries with it the weight of modern classifications of love and desire that may not have existed in previous eras. Homosexuality as known today was not fully codified until the mid-20th century, though this process began much earlier:
Following in the tradition of Michel Foucault, scholars such as Eve Kosofsky Sedgwick and David Halperin have argued that various Victorian public discourses, notably the psychiatric and the legal, fostered a designation or invention of the "homosexual" as a distinct category of individuals, a category solidified by the publications of sexologists such as Richard von Krafft-Ebing (1840–1902) and Havelock Ellis (1859–1939), sexologists who provided an almost-pathological interpretation of the phenomenon in rather Essentialist terms, an interpretation that led, before 1910, to hundreds of articles on the subject in The Netherlands, Germany, and elsewhere.