She knew exactly the effect she was having on him, and took the opportunity to push her pelvis up into his and grind against him, letting out little cries of lust and arousal. He moved himself sideways, eyes closed with the effort to resist, but she simply rubbed herself against his thigh, leaving a trail of damp temptation over his leg.
"Untie me... and I'll ride you hard," she whispered throatily. He groaned. Without any conscious thought his body moved so that his erection grazed the inside of her thigh, and she sighed and rubbed herself against his hard, thick length through his underwear, closing her eyes, mouth open, licking her lips in a way that he found almost unbearably sexy.
"Or I can just ride you," he managed to gasp out, and she shrugged, lost in her own world of pleasure as she manoeuvred her clitoris against his now rock hard penis.
He was lost, he knew it, and automatically he reached to untie the bonds, longing to feel her hands on his skin.
As soon as he undid her right arm, her hand moved to his crotch, pushing down his boxers and lightly but appreciatively encircling his penis, smiling for the first time as she rubbed her thumb up the full length of him, laughing as he gasped and swiftly kicked the superfluous garment away. As he freed her left hand he let her guide him into her, and then she rolled him onto his back and started rocking above him, head thrown back as she slid away then thrust herself down, as if she were trying to impale herself on him. Her full breasts swung above him and he could not resist reaching up and massaging them, making her whimper with pleasure. She leaned forwards so that he could guide first one and then the other to his mouth, suckling at her nipples and the soft roundness of the flesh, moaning his appreciation into her skin. His fingers strayed down and found her hard centre once more, rubbing her in time with the rhythm she had found, and making her gasp.
She savoured the feel of him inside her, his cock thick and strong between her legs. As she rode him she angled herself to feel him as deep inside as he could go, feeling so full of him that it was almost unbearable. Her clitoris throbbed at his touch and then she cried out as she started to come. Still she rocked above him, unwilling to let go, and he was hard inside her still as he caressed her breasts and teased her hard centre. She pleasured herself against him, and then when the feelings overtook her she let him roll on top of her and laid back, panting in ecstasy as he thrust into her again and again, her body bucking and writhing under him. He savoured the feel of her round him as he drove into her, the way her body was responding, tightening around his cock till the breath hissed out between his teeth with the pleasure of fucking her so hard. His eyes drank her in as she lay prone beneath him, her skin slick with sweat, her hands clenched into the bedclothes, gasping with each deep, penetrating stroke, and he fought for control so he could keep riding her, keep pumping into her heat and wetness and tightness.
Finally she felt him come inside her and as the warmth flooded her he collapsed on top of her, the heat and weight of him, his skin damp with perspiration, and they kissed once more.
For a few minutes they lay, inert and exhausted, and he was too shagged out to protest when she gently pushed him off and knelt over him, reaching to the far corner of her bed.
"What are you doing?" he murmured idly, taking her nipple between his thumb and forefinger as it swung in his face. Then, as he felt the soft material constrict around his wrist he looked up with startled eyes.
"My turn now," she told him in a husky voice, looking down with a wicked smile and running her tongue along her teeth. She winked before she turned back to the knot she was pulling tight. Her body was still flushed with the heat of "his turn" as she moved above him; he found himself willingly giving her his other wrist. She might call this her turn β but he couldn't wait...