A/N: Okay, here's another one-shot I wrote as a present for freakingpotter. It's a soul mate Dom/sub AU. I wanted to write something a little more romantic and sexy, so I hope you like it :) Warning for underage (they're 17, but aren't they always in these? xD)

Twilight is Sebastian's favorite time of day – when the sky darkens as the sun sets, the last fingers of light darting out from the horizon. He has a perfect view of the setting sun from the high, tall windows of his bedroom. He opens the blinds every afternoon to watch it – to allow the rays of gold to bathe his bedroom in its brilliance. He stares into it, the light in his eyes rejuvenating, invigorating, and the romantic in him – a man he had never known existed until his seventeenth birthday – makes it a point to never miss it.

It's beneath the rays of this parting light that Sebastian sets the stage.

He walks away from the windows and toward his bed. He pulls taut the chains that attach his sub's cuffs to his headboard, double checking that the links are secure, with no slack that will allow Kurt to move – not that Kurt struggles too often.

Kurt enjoys being bound. Most submissives do.

Sebastian rounds the end of the bed and checks the cuffs that bind Kurt's ankles as well, his eyes devouring the vision of this naked boy stretched out over his mattress. Satisfied that all is right in the world, he smiles. His smile is pure affection. It belongs only to Kurt.

No one else has ever witnessed this smile on Sebastian's face.

Sebastian walks back to the head of the bed and leans over Kurt, kissing his eyelids one at a time.

"I love the fact that you are mine," Sebastian whispers. Kurt doesn't say anything in return, but his whole body shivers in response.

Kurt being Sebastian's sub is a gift. Sebastian can have Kurt anytime he wants – anyway he wants.

That's part of what being a soul mate means, but it isn't the only thing.

Sebastian always thought it was though. His whole life, Sebastian didn't buy into the whole soul mate thing, but he was taught that there was no way around it. Biology, DNA, chemistry, societal pressure, whatever, would attach another human being to him permanently - like a parasite, or a tumor. At first, the only thing Sebastian liked about having a soul mate forced upon him was the concept of having complete control over someone else's body. Sebastian had made a list in his head of the boys he knew who he thought would make acceptable subs – boys he wouldn't abhor fucking, boys with sex appeal and quiet dispositions who he was sure would end up becoming beautiful submissives.

Needless to say, Kurt Hummel was not a name on that list.

When Sebastian found out that Kurt was his soul mate – by whatever bizarre twist of fate threw them together – he was furious. Repulsed is not a strong enough verb to describe how Sebastian felt. Sebastian didn't want Kurt. Sebastian couldn't imagine touching him. Touch and kiss and softly spoken words are the ways soul mates communicate (or so he was often told). They are the bridge that connect Doms and subs together, but Sebastian was determined it would never happen. He fought. He complained. He talked to anyone who would listen, anyone he thought could change this. He even tried writing a letter to the president. But each and every time, the answer he got was insufferably the same.

Kurt belonged with him now, and there was no turning back.

Sebastian couldn't deny him. He couldn't abandon him. He couldn't say sayonara, jump into his Porsche, and disappear. A sub can always locate his Dom by the pull in his blood, and vice versa.

Till death – that was Sebastian's sentence, and it was handed down to him on his birthday.

Happy fucking birthday.

So, the game plan changed. Sebastian was determined to have Kurt and make him pay – pay for everything he despised about his new sub simply on principle.

Sebastian had it completely outlined in his head – how badly he was going to torment his sub, how he was going to turn Kurt's life into a living hell, how he was going make Kurt hate not only being a sub, but being Sebastian's sub.

That was Sebastian's goal, and he couldn't wait to get started.

It was approaching sunset when Kurt arrived, sitting in the back seat of the town car that Sebastian's father had sent to Lima to pick him up. Sebastian wanted to suggest that they make Kurt ride for two hours to Westerville in a cab that Kurt would have to pay for, but he decided not to. Sebastian didn't need his parents lecturing him on his responsibilities. His parents were very much in love, his mother a Dom, his father a sub, but when anyone outside the family looked at them, it was hard for them to tell. They treated each other as equals. Sebastian always felt that his parents loved each other on a different level than most soul mates. It was a level of love that Sebastian had always secretly, privately longed to attain.

He couldn't see having that now – not with Kurt as his sub – and it made him despise Kurt more, wanting nothing else but to make Kurt suffer for destroying the one thing Sebastian held dear that no one had been able to touch or taint. It was a silly, romantic sensibility that he hadn't shared with anyone. It had been shoved deep down and packed away in his psyche for safe keeping a long, long time.

Sebastian saw Kurt sitting in the car – head bowed, eyes downcast, his cheeks a faint red, but not because he was acting shy.

They were red because he was crying.

Sebastian had hoped he would be. He hoped that Kurt's tears would make him happy, that his sub's complete misery at being on the Smythe estate, ready to greet his master, would fill Sebastian with a malicious joy.

And it did, for a quarter of a half a second.

But when Kurt opened the car door and stepped out, Sebastian saw him with new eyes. Kurt was no longer the horrible, gay faced, repugnant pariah that Sebastian made him out to be. Sebastian saw Kurt now, and a much different label leapt to mind.

Mine.

The sun was just about gone, the final threads of champagne-colored light hitting Kurt's skin and making him glow. His foot on the ground sent a tremor racing through Sebastian's body – a ripple of pain…Kurt's pain, and Sebastian found himself doing something he never imagined himself doing for anyone, least of all Kurt.

He rushed to Kurt's side, took the sniffling sub in his arms, and began to console him.

"Shhh," he said softly, running soothing fingers up and down Kurt's spine, "it's all right. You're home now. I'll take care of you."

Those words changed Sebastian the moment he spoke them, but they didn't change anything for Kurt, because Sebastian had to prove them. He had to prove that he meant them.

Sebastian led Kurt to his bedroom – their bedroom. He immediately corrected himself, immediately started thinking of his life in terms of them not him -their room, their home, their life together.

He just needed to make Kurt see it that way.

Sebastian took Kurt's bag and set it carefully at the foot of the bed. Then he began to undress his sub, raising his eyebrows in question, asking for permission with every article of clothing he removed. Kurt stopped crying when Sebastian removed his jacket. His sniffles died with the removal of his shirt. Kurt's eyes grew wide when Sebastian knelt to remove his shoes and socks, then peeled the pants from his legs. Sebastian redressed Kurt with touches and with kisses. Kurt almost objected when Sebastian kissed the back of his neck, starting at his hairline and ending above his spine, but each kiss leeched Kurt's arguments and his sadness away. Sebastian's lips found a spot on Kurt's left shoulder that made him gasp, and Sebastian kissed it again…and again, experimenting with pressure and with swipes from his tongue, enjoying the way Kurt tasted in this one spot, comparing it with the way he tasted in others.

For a moment, Sebastian considered not removing Kurt's underwear. It might be too much too soon. He had no intention of forcing himself on Kurt - at least, not anymore, and the fact that the thought had once crossed his mind made his tongue shrivel, his mouth going painfully dry.

Kurt took the initiative instead when Sebastian waited too long – watery blue gaze locked onto Sebastian's green eyes, eyes that soaked in every fluid move as Kurt hooked his thumbs into the waistband of his black briefs and slipped them down his legs, his skin flushing rose but with no sign of shame on his blank face.

Sebastian wanted to act smooth, wanted to appear unfazed, but there was no way he couldn't be. Kurt wasn't just handsome; he was unspeakably beautiful, and he belonged to Sebastian.

They belonged to each other.

Sebastian took Kurt's hands in his and led Kurt to his bed, where he already had cuffs set up but for more sinister purposes. Seeing them, he wanted to rip them down, but something flashed in Kurt's eyes when he noticed them – something exciting. Many subs relished being bound. God, the amount of times he heard Jeff and Nick go on about it was…well, disturbing, to be honest. But what he saw in Kurt's eyes didn't disturb him at all. It became fuel for his need – but not his need to control Kurt. It was a need to give Kurt what he wanted.

He laid Kurt down, putting a hand on his shoulder and pushing gently, then maneuvering him back onto the pillows at the head of the bed. All the while Kurt watched him, his eyes glued to Sebastian's face as he raised Kurt's arms one by one over his head and locked his wrists, keeping the chain tight but the cuffs loose, not wanting to cut into Kurt's pale as porcelain skin.

Their first night together, they laid side by side and simply stared at one another, communicating so much from one gaze to another – the drop of Sebastian's eyelashes when he looked at Kurt's body, the tilt of Kurt's eyes as he followed Sebastian's line of sight. They fell asleep that way, with Sebastian's arm looped over Kurt's waist and a blanket covering them both.

It was a comfortable sleep.

Sebastian woke before Kurt the next morning with a single thought in his mind.

Mine.

This became their ritual, every evening, right at sunset. Neither of them says a word, retreating up the stairs with shy smiles and affectionate glances when they notice the sun go down. If Sebastian's mother and father smile after them as they walk wordlessly up the staircase to their room, it's because it's hard not to notice how completely in love the two boys have become.

Sebastian sets Kurt up on the bed where he can see Kurt's flawless skin to its best advantage – basking in the fading sunlight.

Sebastian undresses for Kurt once he's bound. He lets Kurt look at his body, lets him absorb every inch, every flaw; he hides nothing from his sub. He climbs on the bed, contemplating his sub, his soul mate, chained up beside him, an intense calm in his sparkling blue eyes at being bound, his lips wet, expecting his Dom's kisses – kisses that Sebastian would never deny him.

But he does make him wait.

Sebastian runs a hand lightly down Kurt's body, just touching him, starting under his chin at his neck, trailing the flat of his hand over Kurt's chest, then his abs, and down his leg, noting the changes – the bumps that form on Kurt's skin, the hairs that stand on end. Moans that Kurt can't hold in escape his lips, his body bowing to chase Sebastian's hand, and Kurt's gorgeous cock lengthening, bobbing, growing just for him.

But Sebastian's favorite part – the part he didn't expect to enjoy – is Kurt whispering his name, tossing his head back and forth as "Sebastian…Sebastian…" slips from his lips. Sebastian is happy to touch his sub, to do this and only this until Kurt begs for him.

"Sebastian…sir…please…"

One please is all it takes to get Sebastian to kiss him, and perhaps Kurt knows this, but maybe he prefers the torture, delights in the attention.

Many Doms would change their tactics if they knew their subs had them figured out, but Sebastian doesn't care about control.

He only cares about Kurt.

He kisses Kurt – hard kisses that steal every inch of Kurt's breath, soft kisses that linger over the sensitive skin along the contours of his mouth, urgent kisses that let Kurt know that Sebastian needs him, too. Sebastian's hand trails down the lines of Kurt's body, the backs of his fingers creeping down Kurt's skin until they reach his cock, wrapping firmly around, and strokes gently.

Sebastian captures the first choked breath that leaves Kurt's mouth and every one after, swallowing every moan, every gasp, every shudder. Kurt whines in the back of his throat when he gets close, and Sebastian changes his technique, alternating between fast and slow, fast and slow.

It's the slight tremble in Kurt's lips that lets Sebastian know that Kurt is desperate to cum, desperate to show Sebastian how much his Dom pleases him. Kurt didn't think it could be this way. When he first found out his Dom assignment, it nearly broke him. He pictured a lifetime collared and on his knees. That rarely happened, but it wasn't unheard of, and there was really no law against it.

As long as a sub was fed and cared for, their treatment was up to the discretion of their Dom.

He didn't imagine that Sebastian Smythe was capable of anything but cruelty.

He never thought this thing between them might turn into love.

Not every pair bond turned into love. Sometimes they were hit and miss. Some bonded couples remained close friends, others became indifferent, a few became abusive.

But love…Kurt hadn't expected love, and that's what this surely is between them.

That's why Sebastian looks at him as if the rest of his future lies somewhere in Kurt's eyes.

That's why Sebastian does this for him without asking for anything in return.

That's why he's taking things slow – waiting for the right time before they move on to the next step.

As Sebastian climbs down Kurt's body and lets Kurt cum in his mouth, Kurt imagines that moment (somewhere in the hopefully near future) will be as wonderful as this one, and all the moments before it – the picnic lunches on the quad at school, the long drives out to the Auglaize River, reading to one another in the library downstairs, Friday night dinners with his dad because Sebastian knows how much Kurt misses him, all the shopping trips they go on just because

The memories of all the times Sebastian ridiculed him, bullied him, made fun of him, are quickly bleeding into the past, seeping from his brain and dissolving away every night Sebastian worships him this way.

Once upon a time, Kurt thought being bonded to Sebastian was the end of the world.

Now, Kurt can't think of a single thing he did to get this lucky.

"How do you feel?" Sebastian asks, settling back in beside him and slipping an arm beneath Kurt's back, hugging his naked body close.

"I feel…" Kurt stutters, stopping as Sebastian slowly starts to lick the sweat off his body, feeling on his skin the darkening eyes of a boy who is still a bit smug, still a bit of an egotist, begging for praise. Kurt chuckles, having not enough words left in his brain to put together a sentence. "I'm happy that I'm yours," he says finally, giggling when Sebastian's tongue wraps around his nipple – a spot Sebastian knows is exceptionally ticklish.

Sebastian smiles. He presses his lips to Kurt's cooling skin so he can feel it on Sebastian's face.

"Good…" Sebastian says, grabbing his t-shirt and cleaning Kurt up, preparing him for the nap they're going to take together before the evening ahead forces them downstairs for dinner and conversation with Sebastian's parents. After that, it'll be a couple of hours until they get to come back upstairs and be like this again.

But it's definitely worth the wait.

"…because I love you being mine."