Mark was getting annoyed. With those pictures hanging over his head, and Diana using him at her whim, life was getting annoying. Even the substantial raise that had accompanied his servitude was little compensation for being, essentially, a call-girl-boy. What could he do, though? All he knew is that he had to think of something.
At that moment, his phone rang, and Diana's voice greeted his ear. "Sapphire. Mark, I'm taking a client to dinner at 6pm, and you're coming with us. Dress as sexy as you can. Meet you at the restaurant at 5:45 for drinks. Bye."
Mark showed up at 5:45 on the dot, ready for whatever was to come. He had changed into his best suit, which fit like an old glove, showing off the contours of his muscular body. He wore a tight t-shirt underneath, black, that showed off his six-pack and pecs. He was definitely dressed to impress.
At 5:50, Diana walked in with her client. Her client could have been Diana's twin sister in most respects. Tall and dark, with skin the same shade as Diana's, they were even dressed alike in professional business suits, except Diana wore slacks while the newcomer wore a short skirt. The only difference was that the client was more voluptuous than Diana; Mark estimated her breasts at least a 34c, maybe larger.
"Cassie, this is Mark. Mark, this is Cassandra, CEO of the company that supplies us with all of the proprietary hardware that makes us great."
Cassandra laughed and extended her hand, which Mark shook cordially. "Pleased to meet you," she said huskily, her voice a low growl that Mark loved immediately.
The dinner went splendidly, Mark, Cassie, and Diana hitting it off wonderfully and having a great time. Most of the way through the meal, Cassie excused herself to visit the rest room. Diana slid her chair next to Mark and reached under the table, grabbing his genitals in her hand and squeezing softly. She leaned close and whispered in his ear "I know you want her. How could you not? She's gorgeous. And you get to have her, tonight. When she comes back, I'm going to go to the rest room. One minute later, you will too, only you'll come into the women's room, I'll be waiting, and I'll tell you what you're going to do." When Cassie returned, Diana left, followed shortly by Mark.
When he walked into the women's room, Diana grabbed him and pulled him into one of the stalls. She wasn't wearing anything below the belt. Working quickly, she yanked down his pants and underwear and pushed him down on the seat. She straddled him and lowered herself onto him, facing away from him. She spoke back over her shoulder as she ground into him. "You're going to take my limo... oohhh... and you're going to find a way... oh, yeah, there... to fuck her... in the limo... aaaahhhh... it has to be... in the limo...I won't accept failure. And it should be as kinky as possible. Do you understand?" Mark grunted a reply, and Diana shuddered as she came. Climbing off, she reached into her purse and pulled out a towelette, and tossed it at him. "Wipe yourself off and rejoin us at the table" she said as she redressed quickly and stepped out the door. Mark rejoined them at the table a few minutes later.
As they were leaving, Diana handed Cassandra 2 tickets. "They're for the hottest show in town... you and Mark must be my guests. Here, take my limo." And off they went, Diana glaring at Mark to remind him of his assignment.
Feeling vaguely like a slut, and partly like some kind of secret agent, Mark started to apply the charm to Cassandra. All through the ride to the show, and through the show itself, he worked to insinuate himself into her charms. Finally, they returned to the limo for the ride home. Mark spoke quietly to the driver after Cassandra was inside, instructing him to drive around for a while and to take his time getting back to Cassandra's.
Inside the limo now, he poured Cassandra a stiff drink and sidled over beside her. Without a word, he leaned over and kissed her deeply; she responded passionately, as if she were on fire. They pulled at each other's clothes, quickly stripping down to underclothes. Cassandra was in all black; a strapless bra that pushed her bountiful chest up and out, thong panties, and thigh high stockings, black heels adorning her feet. Mark's boxers were barely containing him; it had been so long since he'd been in control of a sexual situation, he could barely restrain his desire. Diana wanted kinky; Mark wanted to use Cassandra in every way he could, but he also recognized that he needed to cause her to lose control in order to get everything he wanted from her.
He knew the first step towards pushing her past her limits was to get her as hot as possible. Grabbing her panties, he pulled them off as he slid to his knees before her, raising her legs onto his shoulders. He positioned his head, extended his tongue, and wrapped his hands around her back and butt, yanking her to his mouth, impaling her full length on his long tongue. Her gasp and moan echoed around the car as her hands found his hair, entwining in it as he stroked her hard button with his thumb and rammed his tongue into her, over and over. With his other hand, as if an afterthought, he gently stroked around the tiny opening underneath, accustoming her to his touch in that sensitive area.