The gym's empty late at night, perfect for this exhibitionist couple's games. She's on the treadmill, her tits bouncing, sweat drenching her sports bra, pussy growing wetter with each step. He watches, his cock hard, from the bench press. When she's had enough, she walks over, straddles him, and they make out hungrily. He reaches under her shorts, finding her soaking, and she moans. They fuck right there, oblivious to potential discovery, the thrill of being caught adding to their pleasure.