<p><a href="https://www.patreon.com/beccabellamy?filters[tag]=training%20cuckold%20cum%20slut">Click here</a> to access previous parts of the story.</p><p><img data-media-id="28724110" src="/31/02/3102563e4639f840c5fabc279401de07e886e55dd9f590589428183860ae44b4.jpg"></p><p>It was a week before Mistress Isabella contacted Mitchell again and it was agonizing for him. It had taken only two encounters for her to unlock something in Mitchell that he hadn’t known was there. She opened the door to a world of kink that he hadn’t ever considered and all he wanted was to play in that place.</p><p>Mistress Isabella denied him that opportunity for a full seven days. He sent her numerous texts and even tried to call a few times, but she never responded. By the end of the week Mitchell had reached a place of despair. He thought she’d moved on to someone else; that she had tossed him aside after having fun with him.</p><p>When she finally called, Mitchell tried his best not to sound desperate when he answered. “Mistress Isabella?” he said in what he thought was a calm, collected voice.</p><p>“Have you been a good boy, Mitchell?” she asked.</p><p>Mitchell knew what she was referring to. “Yes. I haven’t cum all week. I haven’t even masturbated, I promise.”</p><p>“Have you been thinking about me?” Mistress Isabella inquired.</p><p>“Constantly,” Mitchell admitted. “These last few days it’s been particularly hard to think about anything else.” As the words poured from his mouth Mitchell considered just how true they were. He’d had difficulty concentrating at work and even had trouble falling asleep the previous night.</p><p>A low groan that almost sounded like a purr came from the other end of the line. “Very good,” Mistress Isabella said. “Would you like to continue your training, Mitchell?”</p><p>“Yes, very much so,” Mitchell replied.</p><p>“Good boy. Be here in an hour.” </p><p>The call cut off before he could reply, so Mitchell rushed to take a quick shower and get dressed before driving to Mistress Isabella’s loft.</p><p>He knocked softly and felt overwhelmed with lust when Mistress Isabella answered the door in a black satin robe with delicate lace trim.</p><p>“Welcome,” she said while gesturing for him to enter.</p><p>Mitchell stepped inside and the intoxicating scent of Mistress Isabella’s perfume filled his nose. “You smell wonderful,” he said.</p><p>She smiled and approached Mitchell to offer a delicate kiss on the cheek. The warmth of her body and the softness of her satin robe against his skin was enough to arouse him.</p><p>Mistress Isabella noticed the slight bulge in his pants. “I guess you weren’t lying,” she said.</p><p>“Of course not,” he replied.</p><p>“Strip for me,” she ordered.</p><p>Mitchell did as he was told and eagerly stripped away his clothes, piling them neatly by the door. His cock stood at full attention by the time he’d finished.</p><p>He shuddered when Mistress Isabella wrapped her fingers around it and stroked him softly. “Most men wouldn’t have waited, you know,” she whispered. “But you’re not like most men, are you?”</p><p>“No, mistress,” Mitchell answered.</p><p>“Are you eager to eat cum today, cuckold?” Mistress Isabella asked as she squeezed Mitchell’s cock hard enough to send a mild wave of pain through his loins.</p><p>He winced and said, “Yes, mistress.”</p><p>Mistress Isabella relaxed her grip and stroked him again, offering pleasure to counteract the pain she’d just put him through. “Come with me,” she said.</p><p>Mitchell followed as Mistress Isabella led him to the bed and said, “Bend over and look forward.”</p><p>He did as he was told and bent over with his hands on the mattress. Mistress Isabella moved around behind him, but Mitchell kept his gaze forward as he’d been ordered.</p><p>Soon he felt something cool and wet drip onto his lower back and down the crack of his ass. It was followed by several more drops. He tensed up when Mistress Isabella’s fingers moved between his ass cheeks.</p><p>“Relax, or this will hurt,” she said.</p><p>Mitchell did his best to follow her instructions as she gently rubbed the cool liquid around his asshole. He winced and tensed up again when the tip of her finger pushed inside him.</p><p>“Relax,” she repeated. “It’s only a finger. It’s not going to hurt.”</p><p>Mitchell took a deep breath and relaxed as Mistress Isabella worked the cool liquid into his ass.</p><p>“Good boy,” she said.</p><p>Moments later her hand appeared in front of Mitchell. She opened it to reveal a small silver butt plug with a sparkly red jewel on the end that would be outside his body.</p><p>“A cuckold must be plugged,” she said. “We’ll start with this little plug and work our way up. You’ll be surprised at how much your ass can take.”</p><p>A wave of panic rushed through Mitchell at the suggestion that he’d have large objects invading his ass before long. It subsided quickly as Mistress Isabella gently rubbed his lower back. Once he was relaxed, she easily slipped the butt plug into his asshole.</p><p>There was only a mild sense of discomfort as Mitchell adjusted to the invasion of his anal cavity. It felt worse going in than when it came to rest inside him and it wasn’t long before he felt oddly aroused at having something inside him.</p><p>“Clean up your precum,” Mistress Isabella said as she walked into the bathroom to wash her hands.</p><p>Mitchell looked down and saw a long string of precum dripping from his cock. It had nearly reached the comforter. Mitchell reached down, collected the precum with his fingers, and eagerly sucked them clean. It tasted sweet, unlike the overwhelming saltiness of the cum he’d consumed during his last two sessions with Mistress Isabella.</p><p>“On your knees,” Mistress Isabella commanded when she returned from the bathroom.</p><p>Mitchell fell to his knees without question.</p><p>“Good boy,” she said.</p><p>Mitchell watched eagerly as his beautiful domme untied her robe and let it fall open. She wore nothing underneath and he stared at her flawless naked body.</p><p>“You’re perfect,” he said.</p><p>“Thank you, cuckold,” Mistress Isabella said, gently deflating any desires Mitchell might have had towards enjoying her body in the way most men wanted to.</p><p>Mitchell’s eyes found their way between her legs. He stared at her pussy with a kind of lustful hunger he’d rarely felt, but it wasn’t because he wanted to fuck her. He simply wanted to taste her, to use his tongue to make his beautiful mistress moan.</p><p>“May I?” Mitchell asked as he looked into Mistress Isabella’s eyes.</p><p>“May you what?” she replied.</p><p>“May I worship your pussy?” he clarified.</p><p>“Yes, you may,” Mistress Isabella said as she widened her stance, giving Mitchell the access he craved.</p><p>He closed the gap between them by crawling to her on his knees and pressed his lips against her pussy. The warmth of her thighs felt comforting on either side of his head and when Mistress Isabella moaned as he began to lick her, Mitchell felt a sense of deep satisfaction. Making her feel good was pleasurable in a way he’d never felt before.</p><p>“Good boy,” she said as her fingers ran through his hair. “Worship me.”</p><p>Mitchell felt as though he could lose himself in licking her pussy. He could spend all day between her legs and it would feel like barely an hour had passed. He could lick her to countless orgasms and still want to go back for more. He could lick her until his jaw was too sore to move. Sadly, a knock on the door interrupted his blissful session of pussy worship.</p><p>Mistress Isabella gently pushed his head back and walked away to answer the door. Mitchell stayed on his knees as he knew he should.</p><p>When he turned towards the door he saw his beautiful Mistress and another man enjoying an intimate kiss that filled him with jealousy. It was the kind of kiss that lovers share. Her naked body was pressed against him and their tongues were obviously and eagerly dancing. Mitchell’s cock throbbed as he wished he was the man enjoying that kiss with her.</p><p>“Is this the new one?” the man said as Mistress Isabella walked with him to the bed.</p><p>“It is,” she said. “He’s shown quite a lot of promise so far.”</p><p>Mitchell looked up at the new man in the apartment. He felt small and submissive on his knees as Mistress Isabella’s tall, handsome lover towered above him.</p><p>“Not much to speak of between his legs,” the man observed.</p><p>“I don’t need him for that, do I? That’s what you’re here for,” Mistress Isabella said as she undressed her lover and took his big cock in her hand.</p><p>Mitchell couldn’t help but stare at the much larger cock in Mistress Isabella’s hand. There’s no question it was much bigger than his. He felt a little bit ashamed of the size of his cock, in fact. He wondered how he could possibly please a woman when there were men like that in the world.</p><p>“This is why you’ll never fuck me, cuckold,” Mistress Isabella said, seemingly reading Mitchell’s mind. “When I can enjoy a cock like this, why would I ever let yours inside me?”</p><p>“You wouldn’t, mistress,” Mitchell answered.</p><p>Mistress Isabella laughed as she climbed into the bed and spread her legs. “Fuck me,” she said to her lover. “Show the cuckold how a real man fucks a woman.”</p><p>Her voice was laced with dominant aggression and lust and it made Mitchell’s cock ache. He’d gone a week without an orgasm – the longest he’d refrained from cumming in years – and he wanted so desperately to masturbate.</p><p>Mistress Isabella moaned as her lover climbed between her legs and let his cock slip into her pussy. “Fuck me,” she said as her legs wrapped around him and pulled the muscular man deeper inside her. “Fuck me hard.”</p><p>He did as he was told. Mitchell suspected all men that entered her loft did as they were told. She was irresistible in every way.</p><p>From his knees Mitchell watched another man fuck Mistress Isabella. He watched the big cock push in and out of her pussy. He watched as they kissed and moaned into each other’s mouths. He watched the kind of sex he’d never had. He watched a woman receive the kind of fucking he’d never managed to deliver. He felt like an inadequate cuckold.</p><p>After an orgasm swept through her body, Mistress Isabella’s lover pulled out of her. His cock was wet with her juices and still rock hard. He hadn’t cum yet.</p><p>A moment later Mistress Isabella moved to her hands and knees. She turned her head and looked at Mitchell. “Are you hungry, cum slut?” she asked.</p><p>“Yes, mistress,” Mitchell replied.</p><p>“Tell him you’re hungry for his cum,” she ordered.</p><p>Mitchell looked at the man pushing his cock into Mistress Isabella’s pussy from behind and said, “I’m hungry for your cum, sir.”</p><p>“Good boy,” Mistress Isabella said before moaning as the big cock filled her from behind. “It won’t be long now. You’ll have another yummy load of cum in your stomach before you know it.”</p><p>Again Mitchell watched this man fuck Mistress Isabella. He knew he’d likely never get to fuck her, but that didn’t stop him from fantasizing about it. He’d spent the whole week dreaming of his beautiful mistress and he couldn’t stop his brain from conjuring scenarios of sexual bliss where he got to be inside her. That’s why he felt so jealous as he watched.</p><p>“You want me, don’t you cuckold?” Mistress Isabella said.</p><p>“Yes, mistress,” Mitchell answered. He could see no reason to lie.</p><p>“You understand that you’ll never have me, right?” she asked.</p><p>“Yes, mistress. I understand,” Mitchell said in a defeated voice.</p><p>“Do you understand why?” she replied.</p><p>Mitchell looked at her. He knew. He didn’t want to say it, but he knew he had to. “Because my small cock can’t satisfy you.”</p><p>Mistress Isabella closed her eyes as he answered. His words seemed to give her pleasure, or at least to enhance the pleasure already offered by the big cock filling her pussy.</p><p>“That’s right,” she said through a lusty moan. “Your small cock can’t satisfy anyone. You belong on your knees, watching as a better man fucks the woman you crave. Your job is to clean up the mess the better man makes, not to fuck me.”</p><p>“Yes, mistress,” Mitchell answered.</p><p>The man fucking Mistress Isabella groaned as his orgasm approached.</p><p>“Cum on my ass,” she said.</p><p>He pulled out and Mitchell watched as thick shots of cum landed on Mistress Isabella’s perfect ass. It seemed as though the man had saved up, as a considerable volume of semen rested on her ass cheeks, down her crack, and on her asshole by the time he was done.</p><p>“Clean me, cuckold,” Mistress Isabella ordered as the man stepped into the bathroom to wash up.</p><p>Mitchell hopped to his feet and climbed into the bed. Mistress Isabella stayed on her hands and knees as he took his place and surveyed the stunning amount of cum he had to clean.</p><p>“Clean my asshole first,” she said.</p><p>Mitchell spread her ass cheeks and saw the thick white glob of cum that had come to rest on her asshole. He licked it up without hesitation. He ran his tongue over her anus several times, ensuring it was clean as he eagerly swallowed another man’s seed.</p><p>“What a good little cum slut you’re becoming,” Mistress Isabella said. “You didn’t even hesitate.”</p><p>Mitchell smiled at the praise. She was right. He was becoming a cum slut.</p><p>“Keep cleaning, cuck. He made quite a mess,” she ordered.</p><p>Mitchell went back to his task. He moved from cheek to cheek, gleefully licking and sucking the long, thick ropes of cum off of her. The taste was overwhelming but it thrilled him. His tongue and throat were coated with cum even after he swallowed. He’d likely taste it for hours after he’d left.</p><p>When he was finished, Mistress Isabella looked back and smiled. “Very good, cum slut.” Then she looked at Mitchell’s erect cock. “Do you want to cum?”</p><p>“Yes, mistress. Very much so,” he said.</p><p>“You know what you’ll have to do, right?” she asked.</p><p>“I’ll have to clean my mess,” Mitchell answered.</p><p>Mistress Isabella smiled. “That’s right,” she said. “You may masturbate into your hand as long as you swallow it immediately.”</p><p>Mitchell eagerly stroked his cock as Mistress Isabella climbed off the bed and stepped behind him. He groaned when she took his balls in her hand and squeezed them gently, like she was massaging his load.</p><p>“Cum for me, cuckold,” she whispered into his ear. “I want to see you eat your load like a good little cum slut.”</p><p>Mitchell did as he was told. He cried out in pleasure as cum spilled from his cock into the palm of his hand. The moment he was finished Mitchell swallowed his cum like he was drinking a shot of vodka. It went down with the same fiery pain. He didn’t care. He was still basking in post-orgasmic bliss and the feeling of Mistress Isabella’s hand on his balls.</p><p>“Good boy,” she whispered before gently kissing his neck. “Savor that taste, cum slut. It’s going to become much more familiar to you over the next few months.”</p><p>Mitchell couldn’t wait.</p>