Thanks a lot for "Too Young the Hero" - I had been looking for this to no avail.
Here's a scene from the French film "Eleve Libre". A blond teen boy who has moved in with a friend of the family to get private lessons for a tough exam, allows him to suck his cock. But then the man wants more - and takes it.
Not a real rape scene, but questionable consent/semi-non-consensual.
http://rapidshare.com/files/395944017/eleve.avi