Feels Like Silk (1983)

The scene opens with a thick, curly-haired brunette in her 40s sitting on a couch, talking like they’re setting up some kind of emotional build. Natural light, plants around — looks like a chill hangout. Then it cuts to a younger blonde in bed with a guy, both in their 20s, whispering and touching. She’s slim, perky tits, and he’s got a solid build, already naked from the waist down. They start grinding, she climbs on top, rides him slow at first, then picks up pace. Camera stays tight during the grinding, you can see her thighs tense and the way he grabs her hips. Later, the brunette joins them — all three end up in the garden, then back inside for group stuff. The guy takes the blonde from behind while the older woman jerks him off, then swaps to sucking him while the blonde rides again. Lots of skin contact, moans sound real, not overdone. The lighting shifts from natural to artificial as it gets more intense, which works. No flashy edits — just straight-on shots of faces, tits, ass, and dick doing the work.