Chat Noir could hear her breathing hitch and could tell she was almost there. He listened to her moaning and mewing and his mischievous grin grew wider each time she called his name. And there, right as she was at her peak..
"Marinette, you here? It's Chat!"
"Ahhhhhhh! Uh..uhm..Y-yeah! I-I'll be out in a se-second!"!"
He could hear water splashing everywhere as he assumed she just jumped out of her skin.

A few minutes later she emerged into the bedroom. Chat had no idea how he never noticed how breath-taking she was before. She had the most beautiful blue eyes that were looking right at him, and wore her hair in a messy blue bun, sporting her newest Jagged Stone tshirt, black knee socks with three white stripes at the tops, and a pair of solid black lace underwear. He was going to have some fun with her, and wasn't wasting any time.

"Sorry," apologized Marinette, "I thought you weren't coming."

"I'm sorry to have kept you waiting my princess. Though, judging by the flush on your cheeks, perhaps I was interrupting something?"

Her face instantly lit bright red but her stubborn attitude tried to retain a poker face. "You wish lover-boy!"

He smirked. She had brought out a side of him he didn't even know existed until tonight, and mercy was the last thing it knew.

"And this Adrien you were calling out for," he snickered, "you seem to have quite the crush."

"I-I-..that's n-none of your business!"

"Me-owtch my princess, I'm wounded. And here I was," he took two steps and took her chin in his hand, pointing her face to look at him, his lips only inches from hers, "here I was hoping it would be my name escaping from those precious lips of yours."

She gulped. Normally as ladybug she could just brush him off, but this time is different. The look in his eyes, almost predatory. He has never come on this strongly. She was frozen on the spot, her cheeks feeling hotter than they've ever burned before.

"Saying his name like that but then coming out here to meet me in your underwear, I would almost say you were trying to make me jealous. Did you miss me that much?" His cocky grin grew ever wider. "I would be happy to give you every feeling you were fantasizing about in there, if only you'd ask nicely."

Marinette tried to argue back, her face red and the words coming out rushed, "I-I got toothpaste on my p-pants and didn't know you would be here! I-I don't know what's gotten into you Chat but I'm saving myself for someone."

"Who? Adrien Agreste?" Her eyes went wide and he chuckled.

"We'll see about that." The look her teammate gave her sent chills down her spine, and a heartbeat between her legs, more so than she would ever want to admit.
He grabbed her arms, holding them above her head, snaking his other arm around the small of her back to pull her against him, and in one swift motion, grinded against her while dragging the tip of his tongue across her bottom lip. She squirmed, trying like hell to keep face, and not give away how much her body was already betraying her. But she couldn't control herself, her back arching a little bit while she gasped in surprise. He took this as his invitation, beginning to explore the inside of her mouth with his tongue, occasionally biting her bottom lip. Swirling his tongue around hers, enjoying the sweet taste of the hot chocolate she was drinking earlier.

He grinded against her again.

She couldn't believe how quickly her body was giving in, her head getting dizzy. She tried to suppress a moan but didn't catch it in time, moaning into the handsome black cat's mouth.

He smirked. If looks could kill, she just shot him one that would do the job.

She had never seen a cockier, sexier, and more deadly smile in her life.

"Still sure you're not wanting this?"
She glared at him, and the cat responded by grinding his length against her again. She bit her lip to suppress the moan. It was so hard against her! Fuck, that felt amazing.
"What the hell is wrong with me," she thought. She could feel the heat pooling between her legs, and feel the fabric down there stick. Her whole body was heating up, leaving her helpless and panting for air. He continued his attack, trailing kisses down her jaw, down her neck, stopping to bite on the soft patch of skin where he could feel her pulse. Her head threw back with a soft scream escaping her lips and her legs gave way beneath her.
"You see princess, I stopped you right before climax earlier. Your body is crying for it. But I'm not going to give it to you unless you ask."
He went back to sucking on her neck; leaving a hicky. HIS mark on her. He wants everyone to see that Marinette belongs to him.
With all the attention and sensations she was feeling, Marinette couldn't think straight, her head was spinning. She whimpered. This sudden attack was too much, and all she could think about is how all she wants is more. Her body was so sensitive, the pulsing between her legs was almost painful. She couldn't take it much longer. Her body screamed for release and all she could do was think about the feeling of Chat's toned body pressed up against hers and wiggle against him, desperate for any kind of attention to get her to climax.

She was putty in his hands.

He picked her up wrapping her legs around his waist, grinding his cock against her entrance through the thin material of her panties, making quick rhythm. He didn't know how much more he could take himself. She screamed against him, hips moving fast to rub against him. He pressed against her faster and faster, feeling how wet she was through her panties.
"looks like my little princess is enjoying this. But I want to be sure you want this. You have to say please."

She was way past her breaking point. She started to call out "please" when he pulled her shirt up and wrapped his mouth around one of her perk little nipples. Every bit of the word came out jumbled.

Her body was growing hotter.

"Plea-nnnnnmmmm!"

"What was that princess? I don't think I heard you."
He was having too much fun with this, and she couldn't wait anymore. Before he could play anymore tricks she screamed out, "I can't take it anymore! Please! God! Chat please fuck me!"
"As you wish my princess."
He lifted her up by her ass and carried her over to the bed, dropping down on top of her, resting between her legs. Chat quickly ripped her panties off and pulled her shirt over her head, causing her breasts to spring down. His breath caught and his mouth watered. He removed his own clothes with the exception of his mask, and grinded his raw length against her while taking one of her hard, pink nipples in his mouth. He began kneading the other breast with his free hand and twirling the nipple between his fingers. Her body was rolling beneath him. He could feel the heat coming off of her, the pleasure. He looked at her beneath him in nothing but her knee high socks, hair a rumpled sexy mess, face flushed, body covered in little beads of sweat, and head back moaning with each thrust against her. The best part was knowing that he was the one to do this to her.
Chat wasn't going to last much longer. He pulled her face to his, his green eyes searching deeply into her blue ones.
"Are you completely sure, before I do this? I don't want to hurt you."
She didn't need any words. She nodded and grinded her hips against him, closing her eyes to the pleasure. That was all the invitation he needed. He lined himself up at her entrance, captured her swollen lips with his own, and thrust inside her, making her his.
It was unlike anything he had ever felt. It was warm, and she was so wet, and even without moving he could feel how tightly she was squeezing around him. He was going to lose himself inside of her. He looked at her to be sure she was ready for him to move. She bucked her hips and that was it. He pulled back and dove into her with a force and speed he never knew possible. He moved in and out sliding into her again and again. She was rolling her hips back against him and it was taking him over the edge. His hands wandering, feeling every dip and curve of her soft body, exploring her inside and outside all at the same time. Feeling her muscles move beneath him. Wave after wave of pleasure washed over them both as they screamed into each other. The ecstasy soon became too much, as they both cried out each others names. She tightened around him in one last scream, and with a low growl erupting from his chest, he shot every drop of his load inside of her walls.
Afterwards they lay panting and wrapped together.

"So, you said you were saving yourself for Adrien Agreste?"
He grinned, the sexiest grin you could imagine before taking Marinette's lips in his as he detransformed. When he pulled away all Marinette could see was the face of her biggest crush and the love of her life, Adrien Agreste, looking at her with the same cocky grin as Chat Noir.
"Bad Kitty," she chuckled, before snuggling into him and falling asleep.