The next day passed uneventfully and that night Rob returned home, changed out of his work clothes and got into to bed looking at the image of Lydia and doing his devotions as she had commanded. The image of her looking at him imperiously and his whispered repetition of her mantra aroused him and he found himself masturbating to the experience of what had happened at the pool. He pictured her strong muscles underwater and recalled the feeling of security and safety that came with him holding onto her powerful body. It felt like something out of a fantasy and he fell asleep with images of the night before in his mind as well as a strange sense of comfort and calmness that washed over him.
His dreams were awash with scenes of Lydia, the painting she had sent him and the combination of remembering what they had done the night before and his own fantasies. In his dream he and Lydia were poolside again and she whispered to him,
"Bobbie... Little duckling... are you ready for more?"
"Yes Ms. Lydia" he said in a high voice.
"Ready for me to take you, my duckling?"
"Yes Ms. Lydia" he repeated.
In the dream he was wearing a light sun dress and had blonde curls. His arms and legs felt heavy with weakness: he was the little girl she kept telling him to become. Part of him wanted to resist this image of himself but part of him knew it also felt right.
His vision was cloudy but he felt her get atop him and lean down and kiss him. He opened his eyes slightly and saw her neck, muscular and powerful, her lips, full and red, and her eyes staring into him. Her face was surrounded in white but he could see her muscular arms raised above her head, adjusting her tight black ponytail.
"Ask me to take you, little Bobbi."
"Please Ms. Lydia. Please fuck me."
She smiled and he felt her lean into him. He was surprised in his dream because in his fantasy he felt her cock slide into his pussy. His pussy was wet for her and he let out a small moan as she entered him. "Yes, baby, take my cock." She whispered with a gravelly voice and he moaned and screamed. It felt amazing: her stiff long cock penetrating him between his legs. He writhed under her strong body, felt her cock slide in and out of his wet, shaven slit and she fucked him hard and intensely -- before long he exploded. Her face melted away as he awoke from his dream, realizing that it was just that, a dream. He shook his head as he collected himself -- he didn't want a vagina, he didn't want girl with a dick, it was just the strange blurring together of what had happened over the past few days. Lydia was hot and they had played with their gender roles a bit but he didn't want to be a little girl.
The dream had been real enough, however, as he had cum while he was asleep so he tossed his pyjamas off and got into the shower. While he was in the shower he saw that his phone was buzzed with a text message. His heart leapt, he hoped it was her. He quickly finished washing off and checked the message.
"Hello, duckling. Did you miss me?"
"Yes, Ms. Lydia. I keep thinking about you."
"Good. I'll be at the pool in 30 minutes. Be there for your next lesson."
His heart sped up. Could he return to the pool again given his humiliation about what had happened last time?
He wrote back with shaking hands, "I'm sorry but I'm not sure I can make it."
She replied right away: "Duckling. Be there. 29 minutes."
It wasn't a request, it was a command that touched something inside him. He quickly scrambled to obey her order. He jumped into his clothes and grabbed his swimming suit and raced to the pool. He was thinking that at least it was early enough that the pool would be relatively empty.
He texted her soon after, "Yes, Ms. Lydia."
He arrived there with a few minutes to spare and found Lydia immediately. She was doing squats and lunges next to the pool and he was struck, once again, by her powerful physique and her commitment to self-improvement. Where he would have spent the extra time staring at his phone, she used it to get stronger and better. Upon seeing him Lydia waved and smiled and passed him a bag with his swimming outfit. "Make sure to wear this, duckling. It's your swimming uniform."
He looked at the bag and saw a pink garment inside, "Ms. Lydia... could I wear my normal swimsuit?"
She arched her eyebrow "Of course not, duckling. This is your swimming attire. It's completely fitting for someone like you. Now, get ready quickly and stop dawdling unless, of course, you relish the idea of parading around the pool when the other swimmers arrive."
He reluctantly took the bag and walked into the change room. As he stepped into the cold tiles of the locker room, his mind was racing with thoughts of her powerful muscles and her forceful demeanor. He felt a strange mix of fear and excitement. He opened the bag to find a one piece pink swimsuit. He realized he was past the point of disobeying her orders so he undressed and began to put it on. As he did so he noticed that the tag indicated was for a 13 year old girl yet it fit him well. His small penis tucked away easily and when he looked at himself in the mirror he realized with his soft features and small physique he really did resemble a young girl. Someone would have to look quite closely to discover that he was a boy. It was as if Lydia had spied something inside him and was merely bringing it to the surface.
He stepped out of the change room and saw Lydia waiting by the pool. She was dressed in her lifeguard outfit and looked the image of towering feminine strength; she gave him a beaming smile. Walking up to her he was struck by the difference in their stature and strength: her iron muscles compared to his soft, girlish body. He looked like her little girl, her younger sister even. By now there were a few other people in the pool but they paid him no notice, either because they were struck by the image of the amazonian lifeguard or because he fit the role of small feminine girl so well.
"Oh duckling, you look so sweet. Are you ready for your next lesson?"
"Yes, miss."
She picked him up under his arms and dipped him into the shallow end, a gentle reminder of her ability to dominate him. She then proceeded to put him through the paces with a number of exercises and Rob soon found that the swimming lesson was more than he had bargained for. She tried to teach him butterfly crawl with little success and he was even less adept at floating on his back for any length of time. He continued to sink and found himself held in her strong embrace.
At one point he reached out to her and found himself grabbing onto her sizeable biceps. They were even more impressive to touch than they were to hold: like two sizeable boulders under her skin. She smiled at him coyly, clearly aware of how much he was enjoying holding on to her powerful physique.