"Please!" she begged, but he just smiled, knowing this was merely the beginning of the torture he had planned for her. He intended for this to last much longer than she would like. Leaving the jets off, he stood up, stepping one leg carefully in between the two spreader bars at her knees and ankles, his calf pressing backwards against the bar at her ankles, pulling her pussy close against the side of the tub. This had the effect of locking her legs firmly in place so that she couldn't move away from the jet. He leaned down and turned on the jets. The water pressure was harder against her clit now, since he had forced her closer to the jet, and she bit down on her lower lip, her eyes closing.
"Open your eyes and look at me," he instructed, and as soon as she did so, he turned off the jets.
"Why are you doing this?" she asked him plaintively, and he smiled at her.
"Because I want to," he replied simply, turning the jets back on and watching her writhe in response to the pressure on her clit. She closed her eyes again, and he repeated, louder this time, "open your eyes! Do not stop looking at me." She complied, her face contorting with the effort to hold her eyes open while the water pitilessly flowed around her swollen clit.
"I want to watch your face as I do this to you," he murmured, "so I can gauge your reactions and know when to turn the jets off." She whimpered out the words "oh, no," as he turned off the jets again.
He continued this on/off torture for a long time, varying the amount of time he'd leave the jets on before turning them off, seeing her desperation build as he never let the pressure against her clit continue long enough to give her satisfaction. She was unable to anticipate when the next pleasurable assault would hit, or how long it would last, due to his unpredictable variations in timing. Several times he turned the jets on then off in rapid succession over and over, causing her to writhe and struggle against the constraints of the spreader bars held in place by his leg. Her arms were tired by now, and her neck was getting stiff from having to hold it above the water while he teased her mercilessly. Occasionally she would rest her head against the back of the tub, but the angle of the built-in armrest under the water's surface prevented her from achieving any comfortable position. She had begged him several times to please let her come, but he ignored her. A few times he picked up the nipple chain again and tugged, making her cry out in what he thought was pain. He pulled on it hard enough to raise her breasts all the way out of the water, making sure the jets were on as he did so, wanting her to associate the pleasure on her clit with the pain in her nipples. He wondered if, with enough conditioning like this, he could someday make her come just by yanking on the nipple chain, since she would automatically associate that pain with orgasmic pleasure. He thought it might be worth a try, and decided in future he would experiment more with this intriguing idea.
By the time the water in the bathtub was barely lukewarm, and she was practically in tears from the frustration and denial he had inflicted on her for so long, he removed his leg from between the spreader bars and took off his clothes. Climbing into the tub next to her, he moved her around so he could sit behind her, her legs still over the side of the tub. He lifted her onto his lap, moving her easily due to her weightlessness from the water, and slid his rock-hard erection into her from behind. She nearly screamed from the anticipatory pleasure, and he felt her muscles contracting around his cock as he buried himself deeply inside her, not moving or allowing her to.
Reaching around to her front, he pulled on the nipple chain with one hand, and brought his other hand down between her legs. She began whispering the word "please" over and over again in a repeating mantra, and he used his index finger to stroke gently down her engorged clit, then slowly back up again. Her legs were still forced widely apart by the spreader bars, and with his arms around her, there was nothing she could do to prevent him from stroking her clit, or alter the angle or speed or amount of pressure he used. He began moving his hips beneath her, first slowly, then faster and faster as his climax built rapidly. As he fucked her harder, from underneath and behind her, he never stopped the delicate sliding motions of his index finger up and down along her clit. Finally, with a long uncontrollable cry of pleasure and release, she climaxed powerfully against his hand, her body bucking fiercely against his as she came and came and came, gasping and crying out involuntarily as her orgasm lasted so long she could no longer breathe. He also climaxed then, ejaculating forcefully up inside her, a strangled cry of "oh" escaping his lips as he shuddered and thrust into her over and over.
Once the aftershocks slowed down, they lay together in the tub, panting. He reached up with both hands and removed both nipple clamps simultaneously, making her convulse against him again and squeeze his cock tightly inside her. "Oh, God," she moaned, then started to cry. He was no longer alarmed by such crying, knowing that it was a normal reaction to the huge emotional release she felt after such an intense and extended stimulation of her senses. He wrapped his arms around her torso and held her tightly to him, nuzzling his face into the back of her neck. She sobbed, her shoulders shaking against his chest, and managed to choke out, "Oh, God...oh, God, I love you...I love you so, so much." He held her even tighter to his chest, kissing the side of her neck. "I love you too," he replied softly, "and that's why I did this for you tonight."