I love her bouncing boobs when I fuck her

She and I only get to peek at each other in the gym showers when no one is around, and as much as I want to, I can’t resist the desire to see her tits bounce. The first time I fucked her it was just a fling, I couldn’t help it, but now I can’t get the memory of seeing her bouncing tits out of my head when I fucked her, so now I can’t stop and when I see her in the gym we wait until no one is around to go into the showers and fuck to the rhythm of her bouncing tits.