Run Jackson Run (1972)

Blonde with long wavy hair is on top, riding a dark-haired guy in bed — she’s slim, got that natural bounce as he watches her work. They switch to oral, her bobbing slowly at first then picking up pace while he leans back against the pillows. Camera stays tight, low angles during the blowjob, catches every movement. Later they’re kissing deep, limbs tangled, close-up shots show the wetness on his shaft before she takes it fully again. Final shot is him alone, muscles flexed, face twisted like he’s blowing a load. Lighting’s dim, just enough to see the sweat on their bodies.