Title: The Perfect Fit
By: angstytimelord
Pairing: Tenth Doctor/Mick St. John
Fandom: Doctor Who/Moonlight
Rating: NC-17
Table: smut_69
Prompt: 66, Wrong
Disclaimer: This is entirely a product of my own imagination, and I make no profit from it. I do not own the lovely Tenth Doctor or Mick St. John, just borrowing them for a while. Please do not sue.

***

Mick slumped in one of the easy chairs in the Tardis' library, his chin propped in his hands. He was deep in thought, not even realizing it when the Doctor came into the room. He was far away in his mind; nothing around him registered at all.

"Sweetheart?" The Doctor's voice was quiet, hesitant. "Are you all right?" His concerned gaze rested on the other man, his expression worried. "I couldn't find you anywhere else on the Tardis, but I didn't think you'd be here. Is there anything you need to talk about?"

Mick looked up in surprise, drawn out of his thoughts. "What? Sorry, I was thinking about something." He gave the Doctor a wan smile, sitting up a little straighter in his chair. "Did you need to talk? I wasn't trying to avoid you or anything like that. Just needed to think."

The Doctor nodded, looking grave. "If there's something bothering you, Mick, I hope you'll tell me about it. I don't like the idea of either of us keeping our emotions inside. That's never good, you know. When you do that, they always end up exploding sooner or later."

Mick nodded soberly; he already knew that, and he'd had more than his share of dealing with it, both from his own emotions and other people's. "Yeah, I know. I was just .... thinking about the two of us. And if it's really right for me to be here."

"Why wouldn't it be?" The Doctor looked startled at his words, his dark eyes widening and his face going pale. "Mick, your being here with me isn't wrong. How could it be? You may have saved my life when we met. I think that was some kind of fate."

"Is it right for you to have a vampire around?" Mick asked softly, his blue eyes clouded with doubt. "What do we do if there's a time when I need blood -- and I have to take it from you? And what if your blood is toxic to me because you're not human?"

The Doctor shook his head, sinking down onto the couch. "I know those could be problems, but we'll have to work around them. We can always make sure we have a supply of blood for you. It would be ridiculous for you to leave just because of that."

"This isn't wrong for me," Mick said with a sigh. "Being here with you feels more right than anything I ever did on Earth. But I can't help wondering if it's the wrong thing for you, if you need somebody to be with you who's more .... well, more of a normal person."

"Wrong?" The Doctor stood up, a determined expression on his face. "I'm going to prove to you that this isn't wrong -- for either one of us." Slowly, he reached for the hem of the t-shirt he was wearing, pulling the fabric over his head and tossing it aside.

Mick stared up at him, his own blue eyes widening with surprise. He hadn't expected anything like this -- not that he would turn it down, but he'd thought they were going to have a serious, sober conversation. This was turning out to be anything but serious.

The Doctor moved to stand directly in front of Mick, tilting his head to the side and placing his hands on his hips. "You're overdressed for what I intend to do," he murmured. "And so am I. But I know exactly how to remedy that. It'll only take a minute."

With those words, he bent to work at the button and zipper on Mick's jeans, tugging at the fabric before Mick could say a word. He raised his hips obediently, letting the Doctor pull his jeans off even as he removed his t-shirt, watching as the Time Lord stepped back.

It only took the Doctor another few seconds to remove his own jeans, stepping out of them and leaning over Mick. The look in the Time Lord's eyes was aggressive, determined, a look that he'd never seen there before, not even when his lover was deep in the throes of passion.

"I'm going to prove to you that our being together isn't wrong -- and that you being here is the best thing for both of us," the Doctor whispered, his voice hoarse and throaty. Mick could hear desire in that voice, a desire that matched his own.

He let out his breath in a soft whoosh as the Doctor climbed onto his lap, his hands instinctively moving to those narrow hips to make sure that the other man was steady as the Time Lord straddled him. There was no stopping this -- and he didn't want to.

The Doctor slowly lowered himself onto Mick's erect cock, hissing slightly as he was filled. Mick realized with a shock that they had no lube; the Doctor was doing this dry. He wanted to tell the other man not to put himself through this, but he couldn't speak.

The feel of those tight muscles clenching around him, the impossible heat that suddenly enveloped him, rendered Mick speechless. All he could do was gasp, his fingers tightening on the Doctor's hips, his mind and body caught up in a whirling maelstrom of sensation.

Passion drove all other thoughts out of his mind; Mick clutched the Doctor's slender hips, pulling the other man down onto his cock, his cry of pleasure mingling with the Time Lord's. He thrust his own hips upwards, wanting more contact, needing to bury himself inside the other man.

The Doctor fell forward, his hands on Mick's shoulders, his face so close that Mick could see every pore, every line on his face. All of those lines were beautiful to him; he'd never seen such an awe-inspiring sight as the one that was presented to his eyes at this moment.

How could this be wrong? Mick asked himself as his hips thrust up again. Nothing that felt this good could possibly be the wrong thing to do; he belonged here with the Doctor. Any problems that came their way could be overcome. They would have to be.

He was never leaving, he told himself, the words pounding in his brain. He couldn't walk away from this man; he couldn't give this up, not for a day, not even for a moment. The Time Lord was right; the two of them had been fated to meet and be together.

The Doctor's soft moans sliced into his thoughts; he could tell by the tensing of the other man's muscles that he was close to the edge, as Mick was himself. He should have known that this couldn't last long; it was too hot, too close, too intense.

They had to savor these feelings while they could, grasp hold of every moment they had together and live it to its fullest. They had to make what they had together last -- and they would, Mick vowed to himself. His future was here; he belonged nowhere else.

His release was sharp and quick; Mick cried out in pleasure, his hands clutching at the Doctor's slender hips. He could feel the other man's climax, only a few seconds after his; the clenching of those muscles around him made him cry out again, this time in triumph.

This wasn't wrong. It couldn't be. Nothing had ever felt so completely right; his union with the Time Lord was meant to be. How could he have ever thought of going back to Earth? There was nothing for him there; that life was nothing more than an empty shell.

The Doctor collapsed against him, his face pressed against Mick's shoulder, those thin arms wrapping around his waist. Mick raised a hand to stroke his fingers through the softness of the Time Lord's hair, closing his eyes and letting himself savor thee afterglow of their lovemaking.

"Have I convinced you that it isn't wrong for you to be here?" the Doctor murmured, raising his head to look into Mick's eyes. "How can anything that feels so marvelous be wrong? And how can you deny that we belong together when we fit so perfectly?"

"This isn't wrong," Mick whispered, closing his eyes and burying his face against the Doctor's hair. "It can't be. You're right, Doctor. We fit perfectly together. I belong here with you. And if we have any problems, we'll figure out a way to work around them."

"Yes, we will," the Doctor told him, sighing and relaxing in his lover's arms. "Haven't I told you that all along? This is where we should be, Mick. You're the one person who can stay with me forever. The one person who's really wanted to do that. I can't lose you. Not now."

"You won't lose me," Mick whispered, taking the Doctor's face between his hands and gazing into the Time Lord's eyes. "Not ever. I won't leave you, Doctor. I don't want to be alone either. So it looks like you and I are the perfect fit. In every way."

The Doctor nodded, his dark gaze locked with Mick's. When their lips met, there was another explosion inside both of them, their bodies tightening in response to their rising passion. Yes, this was indeed where they belonged -- and neither man would ever have doubts about that again.

***