We explore factors affecting audience engagement in mainstream movies showing explicit lesbian sex. A total of 236 participants of different genders and sexual orientations completed a questionnaire measuring factors related to enjoyment immediately after watching La vie d'Adèle in commercial cinemas. Statistical analysis confirmed that positive audience engagement is explained by several factors: viewers considering that the sexual intercourse portrayed is not excessive, the artistic-dramatic justification of the scenes, the inspired appreciation, the perceived realism of the sex scenes and the sexual arousal experienced. Results also show that the use of lesbian sex as a lure is a crucial factor for eliciting enjoyment and appreciation of movies featuring images of explicit sex.