Summer School (1978)
The dude’s got a solid build, brown hair, short cut, looks like he’s in his mid-20s. She’s a slim blonde, short hair in some shots, long in others — might be extensions or lighting tricks. First scene’s him driving a van, both fully dressed, but it quickly moves to them making out in the woods. The blowjob happens off the trail, she’s on her knees, mouth wide, head moving back and forth with pace. Then it flips to doggy style against a tree — deep thrusts, her back arched, hands grabbing bark. Later there’s a group scene in a living room with teens around a table, but no sex there — just talking, laughing, awkward vibes. Final shots are back on the bridge and road, him driving again, POV from passenger seat, low light, headlights cutting through dark. The whole thing feels unrehearsed, outdoor lighting does favors for skin tones, and the sex isn’t over-choreographed. No cumshot shown, at least not in these frames.