Violated! (1975)

The redhead has a tattoo on the back of her head, dark long hair, and a thick, curvy build — you see it all clearly when she’s on top, riding the guy in a dimly lit bedroom. She’s wearing red lingerie at first, then takes it all off as they move into doggy, her back arched, pushing hard against him. Before the sex, they’re outside on a patio, sitting at a table with drinks, talking like they’ve known each other a while. Later, it cuts to them on a bed, still talking, her in just the lace bra and matching pants, then he pulls her down and they go from kissing to full grinding. The camera holds wide shots the whole time, no cuts to fake close-ups, so you get the full motion — how she swings her hips when riding, how deep he goes from behind. There’s no music, just natural sound, making the skin slaps and breathing more real.