This has been reposted after Dragontrybe pointed out some mistakes which have now been corrected so thank you. Enjoy and let me know what you think.

Chapter 2. Let your heart decide

"How about we go find some snow?"

"What?"

"I want to go find a planet with snow."

"Theta you are slightly strange."

"Says you who went ever so slightly insane."

"We are not including that!"

"Fine but only as long as we can go to a planet with snow."

"All right you win. How about we go to a Christmas on earth?"

"How do you know about Christmas Koschei?"

"From my time as Harold Saxon."

"Ah…"

"Yeah lets not talk about that right now."

"It needs talking about sooner or later Koschei."

Neither timelords spoke in the journey from the Master's manor to earth; both were thinking the same things though. They knew some of the fights they had needed talking through but both their natures meant that it was avoided.

The Doctor sighed softly. He hated the entire unsaid things hovering over him and Koschei but he was loath to address it when he knew they would fight over it. The Tardis landed on the Earth, Theta's train of thought was lost when he opened the door to find a least a foot of snow. With a childish glee written all over his face The Doctor turned and grinned at The Master before dashing out without anything more than jeans and a sweater on. Koschei grinned indulgently at the door before shrugging into a long, thick coat and picking up Theta's on the way out. He was met with a snowball in the face from a softly laughing Doctor.

"Now where was there need for that? Even when I bring you coat so you don't freeze out here."

He didn't get an apology for the snowball in the face but he did get a kiss as a thank you for the coat. The Master watched as Theta bounced around in the snow till he got bored and decided Koschei had to help him build a snowman.

"Koschei will you build a snowman with me?"

"Why do you become like a child in the snow Theta?"

"Don't you remember? Once you past the initiation you weren't allowed to be a child anymore and I have also had a love for snow. So I guess I like to have fun in the snow especially if I have someone to share it with."

Flashback

Koschei ran through the hallways, his breath coming in short pants as snapped his head from side to side quickly searching each room he past. He had to find him. Eyes stared as the tall boy ran past but no one stopped him. The dormitory was the last place, his last hope where he would find Theta. When he had regained his breathing enough to speak he called out to his friend.

"Theta you in here?"

The reply was slow and muffled.

"Koschei that you?"

"Yes. Theta where are?"

"In the wardrobe."

"Theta why are you in the wardrobe?"

Koschei sighed as he opened the big oak wardrobe in the room the two of them shared. There huddled in the corner under the clothes was Theta. His head was buried in his arms and his knees drawn up to his chest.

"Oh Theta. You ran didn't you?"

"Couldn't help it, I couldn't watch anymore but I passed, somehow."

Tear tracks stained the smaller boy's cheeks as he looked up at his friend. Koschei didn't have the heart to leave him so he leaned down and scooped the other boy into his arms and carried him over to his bed. Theta clung to the warmth automatically, so when Koschei went to move away he found he couldn't as a slender hand was gripping the front of his shirt. Needing only a second to think about it he slipped onto the bed behind Theta and gently wrapped his arms around the silently sobbing boy.

End Flashback.

"I guess the academy was too harsh on us or maybe it was because you were much kinder and gentler than the rest of us."

Koschei smiled at Theta and joined him in the snow. Between them they managed to build a big snowman, but by the end they were in a competitive snowball fight.

"You're not going to win this Master."

"Ha you just wait Doctor."

"I am but you haven't hit me yet!"

By the time the pair were shivering and wet through neither had won. So they trudged back to the Tardis with snow dripping from their clothes and hair. Koschei nudged the door open while pulling his clothes off; in the middle of stripping his t-shirt he turned to see Theta's eyes fixed on him. The Master grinned as took his Doctor's hand and led him to the shower. Theta was the first under the warm flow of water, he let out a low sigh as his toes and fingers began to thaw out. A strong arm slipped around his waist as Koschei joined him, a shiver went through his body when the older timelord pressed flush against his back. Before long the pair was warm enough to touch without shivering, Koschei growled when Theta moved slightly out of reach to get his shampoo. It took him a few seconds to work out what Theta was about to start.

The younger timelord grinned to himself as he lathered up his silky hair he knew Koschei was growling behind him, yet this was his turn. Normally he had no problem with the Master being the dominant but sometimes the Doctor felt the Master needed reminding he was just as powerful as him so this where their game started. Theta turned so he was facing Koschei as he had expected the other timelord was already aroused. As soon as he turned Koschei made to reach out to pull him close but Theta stopped him by putting a hand to his chest.

"I don't think so Master. It's time for my turn."

Koschei groaned at the heat that spread just from the hand on his chest but he knew better than to try and force the Doctor because the result of that attempt was he sleeping in the guest room for days. So the Master submitted to his Theta commands.

"You don't touch, you may watch but not speak till I give permission."

The Master growled low in his throat but made no move to touch the Doctor as he watched the brunet cover his skin with shower gel, then as slowly as possible rub it in making Koschei jealous of the damn soap. Once they were clean Theta stepped out and headed for their bed. Koschei breath caught as he watched the smaller man lie back on the bed and start to touch himself. He had to dig his nails into a poster of the bed to stop himself pouncing on Theta. This was going to be a long night.

The Master was really beginning to get bored with Earth. It seemed everyday since he and the Doctor had got back together one of his little pet humans tried to ruin it. After the tiring night he had last night Koschei was in no mood to deal with humans, he wanted coffee damnit and maybe a new set of handcuffs. He was pulled out of his thoughts by Theta draping his trench coat over his shoulders.

"I don't see why I need to go with."

"Stop whining Koschei it doesn't suit you."

"But I don't get along with humans."

"You can and will."

"Fine."

The Doctor sighed as he watched the all-powerful Master sulk over going celebrate Donna's birthday. Her mind wipe had been destroyed and although it had made her very ill between them Theta and Koschei had managed to save her. He knew his other half didn't get along with humans but Donna was his best friend so they were going no matter how much the Master sulked.

"Doctor!"

Donna's shouts made him smile as the women flung her arms around him and laughed with joy at her best friend coming.

"I thought you weren't coming"

"Well I couldn't miss your birthday although someone else won't agree as I dragged him."

"Who have you brought? Your new companion?"

"I suppose you could call him that."

The Doctor could hear the low growling coming from Koschei as Donna hadn't removed her arms from around his neck and she looked so happy for him to be here. The familiar tapping of the Masters fingers against the door had Theta looking over at his blonde counterpart. The dark green eyes were swimming with jealousy and anger.

"Do I get to meet my replacement?"

"Of course."

Theta led her over to where The Master was lounging against the doorframe his hair just falling over one eye. Even from a distance Donna could she this man was handsome, his lean but muscled frame shown by the black shirt and tight dark grey jeans. Although the heat in those emerald eyes scared her as he watched them approach.

"Hi I'm Donna, nice to meet you."

The Doctor glared at the Master when it looked like he wasn't going to answer but then he grinned softly so it lit his whole face up and made Donna catch her breathe.

"Nice to meet you Donna I am Koschei."

Donna cocked her head to one side and studied the new companion. There was something off about the way these two were with each other. It was different from the way her Doctor had been with Jack who was his only other male companion and there was that heat in that emerald gaze when it landed on the smaller brunet. Her questions were almost immediately answered as a tall black haired man that was a friend of one of her colleges at work approached the Doctor and after a few minutes of chatting through an arm around the brunets shoulders making sure to lean closer than necessary. Those deep emerald eyes had honed in on the Doctor and Donna could hear the low growling coming from the blonde. It was a scary sound as no human should be able to make a sound so close to the growl of a large cat. The blonde stalked forward catching the attention of nearly every female and some males. Everything went quiet, as the black haired man hadn't noticed the obvious danger heading his way.

Koschei growled lowly in the back of his throat, this human was overstepping his boundaries and touching what was his. Were humans that primitive that he idiot couldn't smell his scent on the brunet? Or see the obvious claiming mark on that pale, smooth neck? His control snapped when the human slipped a hand around Theta's waist.

The Doctor could see the danger the dark haired human was in, it had been pushing it bringing The Master here, as he knew his partner was extremely possessive and under Timelord laws he was perfectly within his rights as the dominant of the pair.

"Excuse me…"

"What? Why don't you push off he I saw him first!"

Donna winced. She knew that was not the right thing to say to the enraged blonde, those eyes had gone like ice and he seemed to be glowing a soft gold colour as he advanced on the blacked haired man.

"He is not in your league human. Now why don't you walk away and I will forgive it this one time."

The Doctor gave the Master a pleading look but he knew his other half was perfectly within rights to kill the human that had touched him. A small secret part of him loved seeing his dominant acting like this as it showed he did really love him.

"I said I saw him first now fuck off!"

This time the snarl could be heard and that's when the black haired man began to look scared. Donna mouthed to the Doctor. Aren't you going to stop him? The Doctor just shook his head; he couldn't and wouldn't stop Koschei.

"Its your funeral. I did warn you."

With a flash Koschei and the human were gone. Donna rushed over to the Doctor and dragged him in a corner while everyone else calmed down, it helped that most were tipsy anyway so figured the other two were just drunk.

"Doctor what the hell was that all about?"

"I am going to tell you but you must never repeat a word promise?"

"Of course now explain."

"Well for a start Koschei is actually the Master, and don't look at me like that I am explaining. It all started when we were kids and back on Gallifrey when we were in the accadmey. You see the fact is we might look simlar to humans but we are nearer feline than human. As you just saw we carry many feline trates including the fact that we only have one mate for life. This we didn't know in our academy days so by the time we were teenagers and had spent years as just the two of us we bonded without realising what we had done."

"You mean all your fighting with The Master was rebellion against having bonded years ago?"

"Yes mostly but there is more, you we didn't really have a problem with being bonded to each other as we are like to halves of the same being. But when the bonded timelords are two male there is always a dominant and a submissive. The problem was that I wasn't ready to submit to Koschei…"

"Wait you mean you're the submissive of the two?"

"Of course I am, I mean looked at me. I am small for a timelord and slender, next to Koschei it obvious I am the submissive. It goes on physical as well as personality as well as the fact that the stronger submissive male timelords can carry children. This is why many timelords believe humans to be beneath them as they are extremely primitive compared to us."

"So how come you are together now them?"

"Hang on a minute I am getting to that bit. We might have fought and tried to stay apart but after a year or two we had to go to each other and reaffirm our bond. As the years went on the length of time we could spend apart got shorter and then a while ago we decided we had matured enough to stop running. I soon found I couldn't walk away again even if I wanted to."

"Why?"

"Because our original bonding was done out of love although both of us denied it and because of that our bond is far too strong to break now."

"So what happened with that black haired man?"

"Yes well I told you we are directly linked to big cats? Well the reason for Koschei's display was that under our laws the dominant mate has a right to remove any threat to his bonded submissive. This was the reason for Koschei's rage and jealously add that to the fact he is naturally possessive and jealous."

"Right I think I get it now. So you have been bonded to the fearful Master all this time and you never thought to tell anyone?"

"Well torchwood found out but other than that you are the only human who will ever know."

"So you have a permanent companion now hehe I find that amusing."

It was then Koschei decided to stalk back in, he was still glowing but now his eyes were emerald flames and he came over to the corner where the Doctor and Donna were still sat. The Doctor whispered to Donna before Koschei got into hearing range.

"You are lucky that he knows I'm gay so you're safe."

"Somehow with him stalking towards me I don't feel safe Doctor."

"Hmm well I do."

"You had better come Theta, we are leaving. Donna we will be back later at your house to see you properly then."

"Sure no problem."

Without further ado the Master fastened his arm around Theta's waist and the pair of them disappeared. Donna knew they would be back after all its not every day you find out that your best friend was bonded to the Master although he didn't seem to be evil like he was before, maybe he had regained some sanity after reuniting with The Doctor.

Back at the Tardis Koschei had Theta pressed against their bed, with their mouths firmly pressed together and Koschei's hands tight on Theta's waist keeping him underneath.

"Where did he touch you?"

"Only on the shoulders Koschei, easy I'm here and I am not going anywhere."

"He touched what is mine, he had no right. Are humans that primitive that he couldn't see you are already claimed and bonded?"

"Yes compared to us they are."

"Mine"

The single word was growled as The Master began letting Theta know exactly whom he belonged to and why. By the time they were drifting to sleep neither had noticed the blue glow that was fading into the Doctors skin.