25 Days of Gays: Eternal Summer (2006)

Eternal Summer is a romantic drama from Taiwan that follows the friendship of Jonathan & Shane, two polar opposite personalities that find themselves inseparable as teens after being forced together as kids. The quiet and studious Jonathan (played by Bryant Chang) becomes the object of affection of new student Carrie, until her efforts at romance cause her to realize he may actually have a crush on Shane (played by Hsiao-chuan Chang). Athlete Shane then uses his charm to court Carrie, which he keeps secret from Jonathan, who begins secretly exploring his sexual identity. Eventually, the secrets held by each of the three come to the surface, forcing them to evolve their relationships. Jonathan & Shane have sex and the sex scene leads to some rear nudity from Bryant and side nudity from Hsiao-chuan, who are both also shirtless in multiple scenes of the film.