Remus passes by a painting where two women are kissing. Their breasts can be seen, but it is brief
Only one graphic sex scene: James and Lily are seen undressing each other in the common room and making out. Lily's breasts and pubic hair can be seen, nothing else. James' butt is the only nudity seen. In a series of brief flashes, James is seen straddling Lily and thrusting with moaning. Scene only lasts 10 seconds and not much nudity seen throughout
Remus is forced to mate with another werewolf (as a werewolf). He is showing humping reluctantly, but as they are animals, it is not too bad. The scene is more emotional