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The following quote is from the Wikipedia site

"Eroticism is an aesthetic focus on, especially the feelings of anticipation of sexual activity. It is not only the state of arousal and anticipation, but also the attempt through whatever means of representation to incite those feelings.

The word "eroticism" is derived from the name of the Greek god of love, Eros. It is conceived as sensual love or the human sex drive (libido). Philosophers and theologians discern three kinds of love: eros, philia, and agape. Of the three, eros is considered the most egocentric, focusing on care for the self.

Ancient Greek philosophy’s overturning of mythology defines in many ways our understanding of the heightened aesthetic sense in eroticism and the question of sexuality. Eros was after all the primordial god of unhinged sexual desire in addition to heteroeroticism, which is the yearning of sexual desire from the opposite sex. In the Platonic ordered system of ideal forms, Eros corresponds to the subject's yearning for ideal beauty and finality. It is the harmonious unification not only between bodies, but between knowledge and pleasure. Eros takes an almost transcendent manifestation when the subject seeks to go beyond itself and form a communion with the objectival other. The French philosopher Georges Bataille believed eroticism was a movement towards the limits of our own subjectivity and humanity, a transgression that dissolves the rational world but is always transitory.

Yet an objection to eros and erotic representation is that it fosters a subject/object relationship in which the object of desire is mere projection of the needs of desiring subject. Love as eros is considered more base than philia (friendship) or agape (self-sacrificing love). But erotic engagement paradoxically individuates and de-individuates the desirer."