That’s Erotic (1979)
Guy with dark short hair and a solid chest full of hair is lying back on a bed, getting a slow, deep blowjob from a brunette with long dark hair and thick lips. She’s wearing eyeliner and rings, riding his face after switching positions, her curvy body moving smoothly in the dim light. Camera stays tight on the oral action — you see every slide of her mouth, the spit trail, how far she takes him down her throat. Earlier in the scene, another dark-haired girl with a slim frame is on her knees in a plain room, sucking him too, same leather couch in the background. There’s no rush — they take turns, switching off between sucking and watching, keeping it natural, not staged. The lighting stays low throughout, close-ups focused on faces and movement, making it feel more intimate than performative.