It was a Friday night, and Dan was home alone. His wife had left for a business trip that morning and was expected back on Monday. He was watching TV on the couch, bored out of his mind, when he heard a knock at the door. He looked through the peephole expecting to see his neighbor, but was surprised to see Marcus.

Marcus was a tall, muscular black man. Dan knew him because he was his wife's boyfriend. They had never met before in person, but Dan knew his name and what he looked like from pictures.

"Hey Marcus," Dan said, opening the door. "What brings you by?"

"Hey Dan, I'm supposed to pick Sharon up for our date tonight. Is she ready?"

"Oh, sorry, man. She's not here. She went out of town on a business trip this morning. She must have forgotten to cancel with you."

"Oh, okay, thanks for letting me know," Marcus replied. "Well, I guess I'll see myself out then."

"Wait, um... wanna come in for a beer or two?" Dan asked hesitantly.

Marcus was surprised by the invitation but said, "Why not? Sure."

As Marcus walked in, Dan closed the door behind him. They sat in the living room chatting and laughing as they drank a couple of cold ones. Dan couldn't believe how relaxed he felt around his wife's black lover. Marcus seemed like a really cool dude.

After their second beer, Dan felt emboldened by the alcohol. He set his bottle down and walked over to where Marcus was sitting. Without saying a word, he knelt down in front of Marcus and reached for his crotch. Marcus looked down in shock as he felt Dan's hand rubbing his bulge.

"What are you doing, man?" Marcus asked, but he couldn't deny the sensation of arousal he felt.

"What Sharon would be doing had she been here," Dan replied with a smirk, "Relax!"

He unzipped Marcus's fly and pulled out his massive black cock. It was huge - easily eleven inches long and super girthy with prominent veins. Dan could barely wrap his fingers around it as he began stroking the shaft. He leaned in and ran his tongue along the underside before fully engulfing the head in his mouth.

Marcus groaned in pleasure, his cock quickly hardening and throbbing on Dan's tongue. "Fuck yeah, just like that," he moaned, grabbing Dan's head.

Dan was amazed by his own enthusiasm. He'd never done anything like this before. But the taste and smell of Marcus's cock was intoxicating. He took it as deep as he could, gagging a little, before pulling back to lick and suck at the tip. His hand pumped the shaft in time with his bobbing head.

It didn't take long before Marcus was ready to bust. "Here it comes," he grunted, pushing Dan's head down. Hot jets of cum erupted from his cock, pumping straight down Dan's throat. Dan gulped and swallowed as much as he could, the excess dripping down his chin.

Marcus slumped back into the couch, totally spent. But Dan was just getting started. He stood up and faced Marcus with a wild glint in his eye.

"We ain't done yet," he said breathlessly.

Next thing Marcus knew, Dan had disappeared into the bedroom. He reemerged a minute later holding a huge bottle of lube. Dan set it on the coffee table and began stripping off his clothes. Soon he was fully nude.

Marcus stood up too, not bothering to hide his erect cock which was already hard again. Dan knelt on the couch and bent over the armrest, presenting his ass to Marcus. He grabbed the lube and squirted a generous amount onto his quivering hole. Then he used two fingers to spread his cheeks open and drizzle more lube inside himself.

Marcus licked his lips at the lewd sight. He grabbed Dan's ass cheeks and spread them wide, spitting right onto his twitching pink hole. Then he pressed the fat head of his cock against Dan's entrance and pushed.

Dan let out a yelp as he felt the burn of Marcus' girthy head popping past his tight rim. His anal ring stretched obscenely around the intrusion. Marcus paused, letting him adjust to the sensation. But then he couldn't hold back any longer.

With a grunt, Marcus shoved forward, burying half his huge cock inside Dan's virgin ass. Dan screamed, his eyes rolling back in his head. Tears streamed down his face at the overwhelming mixture of pain and pleasure.

"Fuck, you're tight," Marcus groaned, pulling back before slamming in again, going even deeper this time.

Dan could only whimper and moan as Marcus set a brutal pace, pounding into his guts. The couch shook with the force of Marcus' thrusts. Dan's dick bounced against his stomach, hard and leaking precum.

But the pain in his ass started morphing into toe-curling ecstasy. Dan's eyes fluttered open as he felt his own climax building. "Don't stop!" he gasped out.

Marcus hooked his arms under Dan's knees and pushed his legs up and back, folding him nearly in half. The new angle let him go even deeper. Dan let out a high-pitched keen as Marcus' cock head kissed his prostate.

With a shuddering groan, Dan came completely untouched. His cock pulsed as it erupted ropes of pearly cum all over his chest and face. His ass clamped down on Marcus' pistoning shaft.

That triggered Marcus' own orgasm. He slammed in to the hilt one last time and held himself there, buried balls-deep in Dan's spasming hole. Dan felt the heat as Marcus flooded his insides with what felt like gallons of molten seed.

They collapsed together onto the couch, both gasping for air. Marcus pulled out with a wet sound and Dan's puffy, gaping hole winked at him. Marcus grinned before flipping Dan over onto his back.

He grabbed Dan's ankles and pushed his knees up to his ears, exposing his twitching, cum-slicked hole. Without warning, Marcus drove back in, using his own load as lube. Dan howled at the sensation of being stuffed full again. Marcus set a punishing rhythm, fucking Dan into the couch and causing him to buck and moan.

It felt like he would never stop cumming. Every time Marcus hit his prostate, Dan saw stars. His little cock jerked and spit, splattering the couch with his release. Marcus fucked him through orgasm after orgasm until Dan was a shaking, over-sensitized mess.

Finally, with a vicious thrust, Marcus buried himself to the root and erupted again. He pumped Dan full of his seed, the excess squelching out around his pistoning shaft. Dan only whimpered weakly, too fucked-out to even moan.

Marcus collapsed on top of him. They lay tangled together, sweaty and sticky with dried fluids, chests heaving as they caught their breath. Dan blinked up at the ceiling, trying to process what had just happened.

After a while, Marcus pulled out and rolled onto his back. Dan's abused hole gaped and fluttered, a river of cum pouring out. Marcus reached over and scooped some up, pushing it back inside Dan's messy hole.

Dan shuddered and moaned at the sensation. He turned his head to look at Marcus and asked, voice hoarse, "Is this how you fuck my wife?"

Marcus grinned and said, "Yup. And she loves it. This tight ass was made for my cock."

Dan didn't know how to respond to that. He was still trying to wrap his head around the fact that he had just been thoroughly, mind-blowingly fucked by his wife's black boyfriend. And that he had enjoyed every second of it.

As if reading his mind, Marcus asked, "You gonna tell Sharon about this?"

Dan thought about it for a moment before answering, "No. Let's just keep this between us, okay?"

Marcus chuckled. "Works for me. Maybe next time she has to cancel, you can give me a call."

He winked at Dan as he got dressed and headed out. Dan was left alone on the couch, cum leaking out of his tender, ravaged hole. He knew he would never look at his marriage the same way again.