Her body was on fire.

That's what it felt like. A burning sensation that she didn't want to stop. It felt too good.

Sheldon's hand came to her waist as he continued to press her against the door. His lips were on her neck, kissing and sucking. Her eyes fluttered closed.

"Shel-don," she said breathlessly.

He smiled against her skin and pressed harder against her. He wanted her to feel him, all of him. He was done being afraid.

Where has that gotten me? He asked himself. He moved to the other side of her neck, licking her clavicle. She moaned. A breakup, that's where. Well, she's back now and I'm tired of denying myself. I want her as much as she wants me.

Her hands ran down his back, sending shivers down his spine. He ground against her and she gasped.

"I-I can't believe this."

He pulled back a bit, eyes darkened with arousal. "What?" he asked as he kissed her lips.

"You."

He chuckled. "You'll have to be more specific."

She shifted her hips so they rubbed against him. He let out a breath and closed his eyes. "This. You. Being aroused by me."

His eyes opened back up and he looked at her. "I've always been aroused by you, Amy Farrah Fowler."

He gently traced her lower lip with his finger.

She tilted her head. "Really?" she was skeptical. "Why did you wait so long?"

He returned to her neck and sucked hard on the skin there. He was definitely going to leave a mark. She belonged to him. "Fear, mostly."

She nodded as best as she could with his head in the crook of her neck. Her left hand moved to cradle his head and she ran her fingers through his short hair, sending another shiver down his spine.

"And now?" she croaked out.

God, I NEVER want him to stop.

He continued on her neck. It needed to be dark so it would last awhile. He wanted Bert and Kripke and even his friends to see. She was going to be marked, claimed. They couldn't see it when he was actually inside her, so he needed to have physical proof.

But oh, he WOULD be inside her before the night was over.

"I'm done being afraid. I love you, Amy. Our breakup showed me how much. I am going to prove to you how much I love you."

He crashed his lips to hers and kissed her hard. She met his kiss with her own, pressing her body against his, against his arousal, even as he continued to press her against the door.

"We-we should move to a more comfortable spot," she said weakly. Her head was spinning at how forceful he was. She had no idea he had it in him. She loved it.

He nodded and reluctantly pulled away. He took a moment to examine his work on her neck. A large purple spot was forming. He smirked.

Withdrawing a few steps, he took her hand. She saw the bulge in his pants and blushed. Although she felt it against her, she tried to convince herself that it was something else. She was still wrapping her head around the fact that Sheldon Cooper had an erection.

She expected him to lead her to his room but instead, he pulled her to the couch. He plopped down in his spot and brought her down with him. She let out a yelp.

"Is this alright?"

She nodded. "Yeah, just caught me off guard." He placed his left hand behind her neck and pulled her towards him. Her hands cradled the back of his while she adjusted, her legs straddling him. His right hand rested on her left thigh and he gently massaged it.

"This okay?"

He nodded. He was on fire. He needed more of her. More of her touch.

Mine.

Then it hit her.

"Wait! What are we doing here?"

He looked at her. "Making out?"

"In your spot?"

Sheldon shrugged. "Why not?"

She stared into his blue eyes. "Because you love your spot. You don't want anyone to sit here. You had the cushion cleaned after Howard's naked butt was here."

Sheldon laughed at the memory. "That is true."

Amy tilted her head. "So why?"

He reached up and began to pull off her cardigan. She assisted in the process. "I guess that's the caveman part of me. I need to claim you in the spot I feel most comfortable in."

He averted his eyes in case she didn't like what he said.

Instead, she pressed her lips to his. This genius was letting his instincts take over. Letting himself be a man. Not just a highly intelligent being. Not a Vulcan. But a man with needs. And it was so sexy.

Her hands moved to the hem of his shirt and he took the hint. He raised his arms up and she pulled both shirts off of him, only breaking the kiss to get them over his head. She tossed them on the floor.

"I'll ignore the mess," he said. He dove back into her neck, too worked up to care.

Her scent was intoxicating. He wanted to drown in her both inside and out. He pulled on her shirt and she obliged.

He took his time lowering his eyes to her chest. He wanted to make sure she was okay with it. He traced the straps of her blue bra, noting how alabaster her skin was.

Even with the fabric over them, her breasts were a sight to behold. In fact, he had to hold them. He raised both his hands and cupped them gently. The sensation even through the fabric sent jolts down her spine.

"So beautiful," he said. He pulled her to him and kissed her in between her breasts. Amy let out a moan.

It was growing increasingly uncomfortable in his pants, but he did not want to stop for any reason. He looked up at her as his right hand moved to the clasp in the back.

She nodded and with a flick of his wrist, the bra started to fall away. She was shocked at how smooth that was.

"How did you do that so well?"

He began pulling the straps down while placing a kiss at her clavicle. "I excel at many things."

She chuckled and tossed the bra aside.

He pulled back and then glanced down. She saw his blue eyes widen and then his hands slowly cupped her once again. She arched her back.

"My god, Sheldon."

He massaged and kneaded her, taking his time. He loved the noises coming from her. He saw her skin pebble and suddenly, he had to get his mouth on her nipple. It was a need.

So he did just that.

Amy let out a cry as he suckled her left nipple while playing with the right one. If her body was on fire before, it was now a raging inferno. She adjusted under his touch and brought herself closer to his arousal.

How is he harder than before?

He moved to the other side and lavished the same treatment, all the while reveling in the noises coming from her. He was doing this. Sheldon Cooper was turning his girlfriend into a whimpering mess and he wasn't even done with her.

His ego grew almost as much as his dick did in that moment.

It was painful, actually. How tight his pants were. He needed relief.

Sheldon hated stopping, but he told Amy about his situation. She nodded and stood up as he removed his offending article. His briefs were still restrictive, but not as bad. And they did nothing to hide the bulge, which he was happy with. He wanted her to see what she did to him.

"You're wearing too many clothes," he told her as he pulled her to him. Reaching behind her, he unzipped her skirt slowly as he kissed her forcefully. It fell and she stepped out of it, removing her shoes as well. She was happy that she had gone without tights tonight. It was a warm summer night and she didn't want to be too hot.

Now she realized that something told her to forego them.

Once they were only in their underwear, things became all too real. Amy was a bit scared about what was going to happen. She had waited so long for him and he seemed so determined. She wondered where this confidence came from.

Cupping her breasts again, he kissed her passionately. The mark on her neck had darkened with her skin flushed and he wanted to do the same on the other side.

He slid his hand down until he was cupping her sex through her blue panties. She gasped at his boldness. Sheldon could feel that the cotton was damp and he groaned, his dick twitching in his briefs.

"Amy…"

She couldn't decipher the look in his eyes. But one thing was missing…fear. She knew that look well.

He gently tugged on the rim of the cloth, asking for permission to remove them. She did the same thing to him. He smiled.

Once free of the last article, he sighed. His dick was large and oh, so erect. She was wet and oh, so inviting.

Amy reached out and placed a timid hand on him. He sucked in a breath.

"Dear lord."

She yanked her hand away and he put it back. "No, don't stop." He leaned over and kissed her as she gently stroked him, feeling him grow harder with each ministration. His eyes fluttered closed.

The sensations coursing through him were like nothing he'd ever felt before. Sheldon Cooper never thought he would feel things like this, had never wanted to before he met her. And now he wanted to experience all of it. With her. Only her.

He hadn't been lying when he said he was always aroused by her. Even if he didn't know it at the time. Her intelligence always gave him a warm feeling. And no matter how much he protested hand holding, the tingling sensation told him to shut up and enjoy it. She overwhelmed him, in a good way.

And when he kissed her on that train, he realized how good it could be. That was when he started considering a future with coitus.

And now, here he was. About to engage in one of the most important moments of his life. With the woman he loved deeply. The woman he almost lost due to his fear.

Before he could stop her, his release burst through and onto her hand. She continued to pump him and drain him as he fought to remain upright. He laid his head on her shoulder as the last of him dribbled out.

"Wow."

His legs were shaking and he leaned on her for support. He took a moment to catch his breath before pulling back to see her.

He did not expect that look.

Sheldon figured she would be angry that he came in her hand. That he didn't have enough control to wait. He was ready with his defense as he's new at this.

But he didn't need that. No. Instead, she was smiling widely at him.

"I take it that was good?"

He laughed.

"The proof is on your hand."

She looked down at it. "Yeah, I should wash that off." She moved around him and began heading to the bathroom. He needed to sit down because his legs were still unsteady.

"Don't think we're done," he told her, blatantly staring at her ass.

As Amy washed her hands, she was giddy. I did this to him. ME. I got Sheldon Cooper to come on my hand. Maybe someday I can taste him.

She returned to him a minute later. He took the time to drink her in. Her body was gorgeous. He knew she had insecurities, but she needn't worry. He noticed her from the day they met. The first sign that they were meant to be together as he never paid attention to how any other woman looked. Not even Penny, and she flaunted her attributes. Amy did the exact opposite by trying to hide her body, but he still took note of how her hips swayed and the subtle bounce of her breasts through the layers of clothing. It made him curious to know what she was hiding under those layers. "Less is more," his mother used to say. Well, it worked.

Amy already had him from the first moment.

Her breasts bounced freely now as she stopped at his side. He pulled her down and immediately kissed her.

"You okay?" she asked him.

"Peachy."

He could feel the stirrings of arousal again.

What is this vixen doing to me?

Sheldon moved his hand down to her sex and ran a finger over her wet folds. She moaned loudly.

"Your turn."

While the angle was a bit difficult given where they were, he didn't want to leave. He had fantasized multiple times of taking her in his spot. Usually, they were more advanced than where they were now, but he was nothing if not an opportunist.

He curled his finger and gently pressed it up inside her. Her moans increased and she arched back.

"Oh god, Sheldon!"

He grinned and continued his movements. At this angle, he had an eyeful of her breasts. He wanted to fondle her again but his other hand was holding her in place. The noises she was making combined with his visual stimulation quickly helped him achieve maximum arousal again.

He couldn't wait to be inside her.

Sheldon felt Amy starting to tense up; he knew she was getting close. He kissed her neck, sucking on the other side to add a second mark as she exploded around him, around his fingers. Her scent was more potent now that she was fully aroused and satiated.

He withdrew his hand and pulled back to look at her. Her eyes were hooded and dark. The green irises were on fire. He looked at the wetness on his hand.

"I take it that was good?" he smirked, repeating her earlier question.

In response, she took his finger and began sucking it. His eyes grew wide along with something else.

Okay, that's it!

He pulled his hand away and looked into her eyes. She nodded and adjusted so she was ready to receive him. Slowly, she sat down on him, taking him in inch by glorious inch.

If Sheldon thought coming in her hand was amazing, this was downright phenomenal. He could feel her warmth as she enclosed around him. Being here, in his spot, made it all that more intimate. He worried that this would be over too quickly, however. He needed to hold on for her. And for himself. He wanted to enjoy this.

She paused and closed her eyes, her nails digging into his arms. He let her set the pace. He could feel something as she pressed down further and then a slight jerk from her as her barrier broke. Finally, he was sheathed completely inside of her.

His caveman reared his ugly head, marveling that he was the one who popped her cherry. And that made him grow even more inside her.

Sheldon waited, the only sound in the apartment being their labored breaths. After a minute, she opened her eyes and began to move.

"You okay?"

She nodded. Her hips gyrated towards his and his eyes rolled back in his head. He held onto her as his head fell against the back of the couch.

"This is definitely your spot from now on," she said as she continued to ride him. He was already feeling the tension building up and he wanted to make sure she came first this time. She had to, he wouldn't be able to make it a third time.

"Claiming my spot and my woman."

Or are they one and the same?

Sheldon couldn't say anymore because they were both too caught up in the sensations coursing through them to form coherent speech. He wondered why he fought against the idea of coitus for so long when he was having the best time.

Because I was waiting for her.

Amy's movements became jagged as she grew closer to the edge. Sheldon was approaching there himself and he pulled her forward and continued sucking on her neck. He needed that mark on her again. That claim.

"Sheldon," she moaned as he twitched inside her.

"I'm so close, Amy."

He held her hips down as he thrusted up and hit her in a different angle. That was apparently the right thing to do as she tensed up and shut her eyes, crying out his name.

He withdrew from her neck with a pop as his orgasm began. Pulling her into a kiss, her walls clamped down and pumped him dry, his seed releasing deep inside her. It seemed to last longer than before and he never wanted it to end.

And here is the mark that they won't see.

She collapsed against him and they laid against the couch, trying to regulate their breathing. The only sound in the apartment was them.

"I need to get up," Amy mumbled against his neck.

"No hurry."

He held her close to him as he felt himself becoming flaccid. The desire for a shower was growing stronger but he also didn't want to release this beautiful woman in his arms.

Mine.

Pulling back for a kiss, he ran his hands down her torso lightly.

"Verdict?" he asked her.

"Meh," she teased.

He glared at her. "Vixen."

She laughed and kissed him. "Absolutely amazing." Feeling strong enough, she lifted herself off him and stood up. He pouted at the loss of contact.

"You?"

He stood up and pulled her close, kissing her again. "Best night of my life."

They remained standing; kissing each other until they felt chilled.

"Amy, I need a shower."

She chuckled. "I figured." She moved to the side so he could pass. He pulled her hand. "Join me?"

Her eyes were as big as saucers. "Who are you and what have you done with Sheldon Cooper?"

Sheldon laughed. "He's been replaced with a man completely in love with a beautiful neuroscientist. And he's okay with that."

Taking his hand, she let him lead her to the shower. After he turned it on, he rotated to her.

"I fought against my urges for so long that I have a lot to make up for. Don't think this was a one-and-done."

Amy's jaw dropped. "Okay." She liked his thinking.

He kissed her nose. "Not tonight, obviously. We're both exhausted. But yes. A whole new beast of Sheldon Cooper has been released." He pulled her into the tub.

"God help us," she teased.

"God help you as you'll be the one on the receiving end." He picked up the soap and began lathering his girlfriend up.

"How will I manage?"

"We'll think of something." They kissed and gently massaged each other until the water turned cold.

After the shower, Sheldon suggested Amy stay the night. As it was late and Leonard wouldn't be back, she agreed.

Sheldon wouldn't have minded if Leonard saw her in the morning. In fact, he wanted him to see her. Just like he wanted everyone to see the marks on her neck. The two perfect marks highlighting his claim on this beautiful and intelligent woman that chose him.

Mine.

As she settled into bed with him, he replayed the events of what transpired. Marking his spot permanently would be the highlight of his evening. The next time Howard or anyone else sits there, he can remind them that his DNA is permanently embedded into that leather. Whereas that would normally gross him out and he'd take the cushion to be cleaned, knowing both he and Amy's DNA shared the seat cushion once again released his inner caveman. He had marked his territory not only on her, but in the apartment as well. And no one better dare mess with his territory.

Or he may have to claim his spot again.

Both of them.