Alex didn't give her time to adjust.
He pulled out almost completely, then slammed back in. Hard. Fast. Setting a brutal pace right from the start.
"Fuck! Alex! Oh god!"
Slap! Slap! Slap!
Her leg was still pressed against the window, stretched high, opening her completely. The angle let him go impossibly deep. Each thrust hit spots that made her entire body jolt.
"Ahh~~ Yes! Right there!"
Alex's hands gripped her hips, fingers digging into her skin hard enough to leave marks. He pounded into her with single-minded intensity, his cock driving into her wet heat over and over.
The window shook with each impact. The glass fogged from their combined breath and body heat. Below them, the city glowed, completely unaware of what was happening forty-seven floors above.
"You feel that?" Alex growled in her ear. "You feel how deep I am?"
"Yes! Oh fuck, yes! I can feel everything! Mmh~~"
The pace was relentless. Alex's hips moved like a machine, each thrust precise and powerful. Sienna's moans echoed through the empty office, mixing with the wet sounds of their bodies joining.
Squelch~~ slap~~ squelch~~
"So tight... fuck, you're still so tight..."
"Only for you... hah~~ only for you tonight..."
Alex's free hand roamed her body while he fucked her. Up her stomach to her breast, squeezing roughly. Down her side to her ass, gripping hard. He couldn't get enough of touching her, feeling her skin under his palms.
"Your body is incredible," he murmured against her neck. "Every fucking inch of you."
"Don't stop... please don't stop... ahh~~"
He had no intention of stopping. His cock pistoned in and out of her, stretching her, filling her completely with each thrust. The position with her leg pressed against the glass gave him an angle that hit her G-spot perfectly.
"Oh god... right there... you're hitting... uhh~~"
"I know," Alex said. "I can feel you getting wetter. Feel your pussy squeezing me every time I hit that spot."
Sienna's nails scraped against the glass, trying to find purchase. Her other hand gripped Alex's arm that was wrapped around her waist, holding on for dear life.
Minutes passed. Five. Ten. Alex maintained that brutal pace, never slowing, never giving her a moment to adjust. Just constant, relentless fucking that had her climbing higher and higher.
"Alex... I'm getting... I think I'm getting close... hah~~"
"Not yet," he commanded. "Hold it."
"I don't know if I can... it feels so good... mmh~~"
His hand moved between them while still fucking her. His fingers found her clit, swollen and sensitive. He rubbed it in tight circles.
"Oh fuck! That's... that's too much! Ahh~~"
"You can take it. Hold it for me."
Sienna's whole body trembled. The combination of his cock pounding into her and his fingers on her clit was overwhelming. She could feel her orgasm building, that pressure coiling tighter and tighter in her core.
"Please... please let me cum... I need it... uhh~~"
"A little longer," Alex's voice was rough in her ear. "I want to feel you really desperate first."
He adjusted his angle slightly, and suddenly every thrust was hitting her G-spot dead-on while his fingers worked her clit mercilessly.
"Fuck! Alex! I can't... I really can't... hah~~"
"Yes you can. You're doing so good. Just a little more."
Tears formed at the corners of Sienna's eyes from the effort of holding back. Her pussy was clenching rhythmically around him, trying to pull him deeper, trying to push her over the edge she was desperately trying to avoid.
"Please... please... I'm begging you... ahh~~"
Alex could feel how close she was. The way her breathing had turned into short gasps. The way her whole body was tensed. The way her pussy was fluttering around him constantly.
"Look at me," he commanded.
Sienna turned her head as much as she could in this position. Their eyes met.
"Now," Alex said. "Cum for me now."
It was like he'd flipped a switch. Her orgasm crashed over her with devastating force.
"Oh god! Oh god! Alex! Ahh~~! I'm cumming! I'm cumming!"
Her pussy clamped down on him like a vice, pulsing rhythmically. Her whole body went rigid, every muscle tensing. Her leg that was pressed against the glass trembled violently.
"Yes! Fuck! Don't stop! Please don't stop! Uhh~~"
Alex didn't stop. He kept fucking her through it, his cock and fingers still working, prolonging her pleasure. Her orgasm seemed to go on forever, wave after wave of pleasure crashing through her.
"Too much! It's too much! Hah~~"
Finally, after what felt like an eternity, her orgasm started to subside. Her body went limp in his arms, boneless and trembling.
Alex slowed his thrusts but didn't stop completely. Long, deep strokes that made her whimper with each one.
"That's one," he murmured in her ear.
Sienna's eyes widened. "One? What do you mean one?"
"I'm not done with you yet."
"Alex, I just... I came so hard... I need a minute..."
"You'll get a minute. But not yet."
He pulled out of her completely. His cock slipped free with a wet sound, glistening with her juices.
Sienna's leg finally came down from the window. The moment her feet touched the ground, her legs started shaking uncontrollably.
"I can't... my legs won't..."
Alex caught her before she could fall, holding her upright. "I've got you."
He turned her around to face him, then lifted her up. Sienna's legs wrapped around his waist instinctively, her arms going around his neck.
"What are we—"
Alex walked them over to her desk. He set her down on the edge, the cool surface a stark contrast to their heated skin.
"Lay back," he instructed.
Sienna obeyed, her body still trembling from her orgasm. She laid back on the desk, her legs hanging over the edge, her chest heaving as she tried to catch her breath.
Alex stood between her legs, looking down at her. She was a mess in the best way - her hair wild, her skin flushed, her pussy swollen and wet.
"You're so fucking beautiful like this," he said, his hands running up her thighs.
"I'm a mess..."
"Exactly." He spread her legs wider, positioning himself at her entrance. "And I'm going to make you even more of one."
Before she could respond, he pushed back inside her. Slower this time, letting her feel every inch.
"Mmh~~ oh god..."
"Still so tight," Alex groaned. "Even after all that."
He started moving. Not as brutal as before, but still firm and steady. His hands gripped her hips, pulling her into each thrust.
Slap~~ slap~~ slap~~
The desk creaked beneath them with each movement. Papers scattered onto the floor. A pen rolled off the edge.
"This desk... hah~~ it's going to break..."
"Let it," Alex said. "I don't care."
His pace gradually increased. What started as firm and steady became faster, harder. Soon he was pounding into her again, the desk shaking with each thrust.
"Yes! Just like that! Oh fuck! Ahh~~"
Alex leaned forward, changing the angle. Now he was almost on top of her, his body covering hers, his cock driving down into her pussy.
"Wrap your legs around me," he commanded.
Sienna obeyed, her legs locking around his waist. The position let him go even deeper, and she cried out at the sensation.
"Too deep! You're too deep! Uhh~~"
"You can take it. You're taking all of me so well."
His mouth found her breast, his tongue circling her nipple before sucking it into his mouth. Sienna arched her back, pushing her chest up into his mouth.
"Yes... suck them... bite them... hah~~"
Alex grazed his teeth against her nipple, applying just enough pressure to make her gasp. Then he moved to the other breast, giving it the same attention.
All the while, his hips never stopped moving. Fucking her steadily on her desk, making her body shake with each thrust.