In the Cold of the Night (1990) (FullHDRip)

A brunette in her 30s with long brown hair and slim build is in the passenger seat of a red vintage car during daylight. She’s giving a blowjob to a guy who’s mostly out of frame — you see her head moving up and down, mouth full, hands working his dick. The scene shifts indoors to a dim room where she’s on her back, legs up, getting pounded in missionary. Camera stays tight, focusing on face, tits, and thrusting. Later there’s a pool party vibe with mixed people in formal wear, but the main action circles back to her — skin-on-skin, wet mouth, occasional moan. The guy has short blonde hair, average build, shows up in a hat store at one point — might be a flash forward or cutaway.