On one condition

Despite her shock Sarah agreed. They all all adjourned to the bedroom and Tom fetched his office chair in so he had somewhere to sit. He was unreasonably excited. He looked like a kid on Christmas as he settled himself into the chair and waited. Sarah crouched down in front of him and gave a wicked smile "You didn't really think I was just going to let this happen without some sort of caveat did you?" she said.

Tom's face dropped, she had been holding his hands "What did you do to me?" he asked.

"You'll see" she said, got up and turned to Tilly.

"What did you do to him?" asked Tilly looking worried.

"He's fine, I don't want to spoil it. Now come here. I've been looking forward to this."

Tilly giggled "Me too" and they began to kiss.

They stayed in front of Tom, aware that they were being watched they made a conscious effort not to obscure their actions.

Tom was instantly hard, his cock was still there and it was erect so she hadn't changed that. He was eager to masturbate but he realised he had never asked if that was appropriate so he asked.

"I don't mind, do you Tilly" said Sarah

Tilly shrugged "I assumed he would" and they went back to what they were doing.

Eagerly Tom removed his trousers and underwear and began to stroke himself. Being there watching them together was incredibly hot. He'd seen them kiss before but being allowed to pleasure himself in front of them was incredible. With the state of his libido and cock he knew he wouldn't last long but he'd be able to cum several times so he didn't hold back. The girls looked at his eager masturbating and giggled at him. He didn't care, in a way it made it hotter.

Tilly had pulled out Sarah's breasts and had begun to suck and squeeze them. Tom felt the pressure build in his groin as his orgasm approached and... nothing. The pressure stayed but his release never came. His cock throbbed like it was on the brink of orgasm and the head looked bulbous as if about to shoot cum but nothing happened. He stroked it more. Surely a few more pumps would bring him over the edge. A couple more, a couple more. Any minute now. Nothing.

Sarah lifted her head from Tilly chest where she had been playing with her tits and looked at Tom "I think he's discovered what I did to him" she said. Tom's hips were lifting from the chair as his body tried to orgasm.

Tilly looked over and watched him for a moment "He can't cum can he?" she said.

Sarah grinned "Nope. Come here."

Tilly pulled Sarah to her "You are so wicked. I was trying to be nice to him."

"I know but I think he kind of prefers it this way, though maybe not right at this minute."

Tilly and Sarah climbed on the bed. They took to ignoring Tomand just got on with the business of pleasuring each other. Soon they were naked on the bed doing all the things they enjoyed. As Tilly got worked up her dominant side kicked in and soon she had Sarah panting for air as she sat on her face.

"Please let me cum" Tom begged for the umpteenth time.

"Shut up Tom you are putting me off" said Tilly as Sarah's face was covered by Tilly's behind "I can't help you and Sarah is busy."

It went on like this for a couple of hours. Tom was going crazy. The pressure in his cock was both pleasurable and torturous. He was seeing sparks, he couldn't talk any more. By the end he was on the floor in a foetal position. Sarah's face poked over the edge of the bed "Oh dear" she said and reached a hand down and touched his bare leg. His whole body convulsed as Tilly peeked over to see what was happening.

"Wow, there's so much" said Tilly "Do you think he will be okay?"

"I think so, I hope so, maybe I did push him a little far on this one." Tom was twitching and dribbles of cum still slithered from his cock. Sarah reached down and touched his leg again and his body relaxed. He looked calm, his skin lost its flush and his cock grew back to its normal size.

"Aww, you made him normal again, that was sweet of you."

Sarah shrugged "I didn't mean to, I was just trying to make him better." She looked at him quizzically "Does he look younger to you?"

Tilly looked at his face and hair "Yea, maybe. He looks a bit less grey than he did."

"I can hear you you know" said a sleepy voiced Tom.

"Oh good, how are you feeling?" asked a genuinely concerned Sarah.

Tom stirred and sat up "Amazingly, pretty good. That was, incredible but not necessarily in a good way" he said rubbing his head. "For a moment I think I was actually broken but now I feel great."

Tilly saw Sarah's shoulders relax and smiled. Sarah was clearly worried she had done something to him but had let it go.

"Take your top off, you got cum all over it and come and have a cuddle" said Sarah.

Tom pulled off his top and was startled by a gasp from the two women "What? What is it?" he said in a panic. When he looked down he saw what they were reacting to. He looked fit, fitter than he ever had. He wasn't buff but he looked like he ran a lot and was rocking a pretty firm stomach.

"You did make him better" commented Tilly ogling his new body including his cock which was now officially the largest she had seen in person.

Sarah name beckoned him over to the bed and she held on to him "Sorry baby. I didn't think it would be so bad for you. I'm glad I could put it right." She lay down and patted the bed next to her. Tom settled down and Sarah turned her back so he could spoon her.

He was happy to share this moment of intimacy with his wife but was surprised when he felt Tilly's warm body press against his back "I'm happy you are okay too" she said as she snuggled into him.

Pressed between two beautiful women he naturally got an erection that pressed against Sarah's bottom "Babe, do you thing we could?"

"No" she said lazily "I don't think so."

Tom rolled his head to talk to Tilly "I don't suppose you'd have sex with me Tilly?"

Sarah elbowed him in the ribs and Tilly laughed "Don't push it" said Sarah