Endometriosis can negatively affects many aspects of womens'life, including their sexuality. Deep or superficial dyspareunia is reported by nearly half of women with endometriosis. The pain has chronic inflammatory, neuropathic or muscular components. Repetition of painful experiences, but also treatments for endometriosis can lead to other sexual disorders such as lack of desire and arousal. We present a narrative review exploring the causes of sexual pain in endometriosis patients and how they could deteriorate quality of sexual life if unrecognized.