Riley's breath came out in more labored grunts as Tao shoved his legs back further and further. He released Tao's neck and flung his arms back to grip the floor on either side of him. "Fuc- fuckingdamnit-" he groaned, squeezing his eyes shut. For once, it seemed that his expression was all pain and no pleasure. All at once Tao had increased his force exponentially, and Riley was feeling the force of it. It was a pain that very quickly forcing him towards the edge of his strength to bear. He moaned with every brutal thrust, writhing and arching instinctively against the pain.