A guy and his hot step sister have sneaky sex in a gym. She is working out in the gym, using her leg to lift weights when the guy fondles her ass. She playfully tries to stop him but he keeps touching her.
Keeping quiet, she pulls down her top so that he can touch her boobs. Then she kneels to give him a blowjob. She bends over and he fucks her from behind. They move to the bathroom where he fucks her brains out while she tries to keep quiet.