The extent of the sex that of one or two scenes of very suggestive but very delicate outercourse between teenage men/boys wearing nothing but underwear - whereby it is clear which male is "top" (active) and which male is "bottom" (passive), despite them facing each other - and several scenes of bare-chested teenage men/boys making-out including a scene with not only lip/face kissing but also brief nipple kissing. The extent of the nudity is one shot of a teenage boy's bare buttocks being exposed as his trousers come down while he is in transition from making out to having implied sex.
All of the teenage characters are in the late teen years (seventeen years old or older) and portrayed by adults (all possibly over the age of twenty years).
A teenage boy and a teenage girl kiss each other, making out, while sitting on top of a bed. They are clothed, he wearing a tank top and knickers whereas she wearing a bustier and skirt. He grasps her breast during this. Later on, they can be seen together laying in bed, under the sheets from the shoulders on down, implicitly nude. They had sex between that time.
One of the themes of the movie is that of a young grownup introducing a somewhat sheltered teenage minor to alternative lifestyles, showing how strangers regularly engage in one-night stands at a particular location, which serves as both exposition and social commentary.