Unfortunately, I can't remember much but I was just thinking about this today. I think it was some sort of adventure film, mostly focusing on what happens when a white teenage girl (British I think) and her younger brother get stranded somewhere in Africa. Somehow, they meet this African adolescent who helps them around I guess, to find food and stuff. There are a few skinny dipping scenes in the film and I think I remember the Wikipedia plot summary said the African at one point did a mating ritual to try to advance on the girl, who was changing then and then put her shirt on. I don't think the African ever talks. After that - the next day - he hangs himself, not sure why. Years later, when the girl is married, she remembers the good times the 3 of them had at a watering hole.