Nøglehullet (1974)

The brunette girl has long dark curly hair and a slim build, sitting on the bed naked under a comforter, completely exposed in one wide shot. She and the blonde guy, who’s muscular with short blonde hair and a beard, spend most of the scene in close contact on the bed — kissing hard, mouths open, hands moving over skin. The lighting stays dim and warm, giving it a private, almost voyeuristic feel, like you’re watching something real behind closed doors. She goes down on him at one point, head bobbing close-up, lips stretched, and you see his hand grip the back of her head. Later she straddles him, riding slow in a grinding motion, both of them breathing heavy, faces flushed. The camera stays tight, focusing on skin, sweat, the way her fingers press into his chest.