Reading part one of this story is recommended, but if not here's the quick summary: Jessie and James are roommates, James has a problem with premature ejaculation, so his sister(a lesbian) volunteers to give him sex therapy, which involves him walking around naked and her walking around in lingerie, all in an effort to keep him aroused for long periods of time without having an orgasm.
After spending a surprisingly arousing week walking around naked in front of his sexy, but lesbian sister, James felt a lot more confident about his ability to avoid premature ejaculation. But he also felt a little disappointed that the sex therapy was now over. The last week had been the most erotic week of his life, and while he didn't want to have sex with his sister, he didn't want to stop either.
His sister Jessie was also feeling disappointed. An avowed lesbian with a steady girlfriend, she had nonetheless very much enjoyed seeing her attractive brother walk around with a proud erection, and had gotten quite aroused when she donned sexy lingerie and pranced around in front of him. She had reveled in her role as sex therapist, keeping him rock hard for several days before finally allowing him to masturbate. As she lay on her bed stroking Joe, her lifelike vibrating dildo, she visualized the moment they shared on the couch, when she straddled him, without touching him, as he masturbated, looking up at her adoringly. The orgasm he had experienced had been epic, covering both of them with a virtual lake of warm fluid. She had not told him, but she had experienced a very strong orgasm as well, all the more amazing since she wasn't full naked and wasn't even touching herself.
As she re-lived the moment, it became a fantasy, and instead of his hands on his cock it was hers. Both of her hands caressed him softly, as she watched him writhe in pleasure beneath her. Then she slid down on the couch and poised her watering mouth just inches away from the tip of his cock. She looked up at him and saw his eyes pleading, and she obeyed his silent command, first kissing, then licking, then taking him all the way into her mouth. As she sucked his cock passionately, one hand went down to her crotch and she had barely touched herself when she felt a strong orgasm wash over her. When she came back to reality she realized that Joe the Dildo was getting a fabulous blow job. She felt almost silly as she let the dildo slide out of her mouth. Get a grip, she thought to herself. She was not going to have sex with her brother. She was still thinking about how she was not going to have sex with her brother, and some of the many different ways that she would not be doing that, when the phone rang and jilted her out of her revelry.
James spent a long, boring day at work, much different than the past week when he had spent every working hour fantasizing about the evening's sex therapy. The day finally ended, and when he got home he stood in front of the door for a few minutes, reliving the memory of coming home to his sister dressed in a silky white robe, and remembering how she had removed it to showcase her fabulous body covered only in a pink bra and thong.
So it came as a bit of a pleasant surprise when he opened the door and Jessie was again dressed in the silky white robe. She met his surprised look with a a big grin.
"Hey bro, how was your day?" she said.
"Well, ok I guess," he said with some hesitation. "What's going on?"
"I've decided that you passed the first two stages of sex therapy, and its time we moved on to stage three," she said.
"Stage three," he murmured. His mind was racing with all the potential that stage three could bring, but he didn't want to seem over anxious. "So what happens in stage three?"
"First, get ready, then we'll talk," she said.
"Get ready?" he asked
"Yes, just like before, get a shower and get naked," she answered.
James didn't have to be told twice, he took a quick shower and came back out into the den, his cock already at half mast.
"Okay, good to see you again," winked Jessie. As she spoke, she attached the mild shock collar around James' neck, which she used to distract him when he became too aroused. "Now, for stage three, what we have to do is go even further, taking your arousal to higher levels, while putting off your release for four days. As before, you must do whatever I tell you to do."
James nodded, his imagination running wild. At the same time he was fighting the urge to imagine it, he was imagining what it would be like to have sex with his sister. What else could the next stage be? He should've been ashamed for thinking about sex with his sister, but instead his cock was now fully erect.
"I hope you can handle this," Jessie said, as she walked slowly over to her bedroom door. She looked back at him with a smile as she reached for the doorknob.
James felt his heart pounding. This was really going to happen. His sister was going to have him into her bedroom, and they were going to have sex. Sex without orgasm, he guessed, but still.
She opened the door, but didn't go in. Instead, to his shock, Jessie's girlfriend Terry walked slowly out, dressed in a pair of very short cutoff jeans and a tank top.
James felt his mouth fall open and his hands instinctively went to cover his crotch. He looked back and forth at Jessie and Terry in stunned silence, unable to comprehend. They were looking back at him with slight grins on their faces.
Finally Jessie spoke up. She walked over close to Terry and put an arm around her and then looked back at James. "As you can see, Terry got back in town sooner than expected. For stage three, we are going to arouse you for four days with the ultimate male fantasy," she said, hesitating for effect. "Hot, live, girl on girl action."
The girls turned towards each other on cue, and their lips met, softly at first and then more passionately, eventually giving James the full on, tongue-twirling make out show. James hands were doing little to cover his throbbing erection and he let them fall to his sides, and then he felt his legs go out and he fell to his knees in front of them.
They broke their kiss to look over at him. "He's cute," said Terry with a grin. "I can see how he might make you wanna change teams, even if he is your brother."
Jessie blushed and then caught herself and got back into sex therapist mode. She carefully laid out the ground rules for stage three. The girls would not be having sex with him. They would not be fully nude in front of him, but would be dressing, and acting, very provocatively. He would not be allowed into their bedroom. He would be teased and taunted and kept at full erection from 5 - 11 pm every night for four straight days, without release. And he would have to obey their commands.
"I could think of a lot of commands I'd like for him to perform," said Terry. In one quick move she flipped off her tank top, leaving her dressed only in jean cutoffs and a small white bra. James was kept speechless as he looked at Terry's fit form. She was dark with brown hair, had just a hint of oriental background, and had an incredible body. She and Jessie had met at karate class.