2 different scenes within 7 mins, both with rear nudity
Two teenage boys masturbate while staring at each other. It is highly implied due to arm movements and facial expressions.
Two boys camp outside on dunes, and start making out and have sex, but the camera cuts away and we only hear soft breathing from the outside of the tent. It is never confirmed if they did have sex, but is highly implied.
Later, it is highly implied the same boys have had sex outside at least twice, but it is never confirmed.
We hear a couple having sex, and groaning loudly, before they are disturbed by another character. You don't see anything, just hear it.
A boy draws topless pictures of a boy who he loves. In one of them, the picture goes down to just below his waist, and you see mild detail on pubic hair.
It is said that one character sleeps around with a lot of men, and when one leaves, she finds and moves onto another man.