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Remus used to wonder whether a life could begin twice.
For years, he would have answered no. A life was a straight line, however broken it became, however many pieces it shattered into along the way. You simply gathered what remained and carried it until the end.
Then he saw Sirius Black standing in the Shrieking Shack.
In the space of a heartbeat, twelve years folded in on themselves. Every certainty he'd clung to dissolved like mist before morning light. The anger he'd worn so faithfully. The grief he'd mistaken for acceptance. The endless ache he'd convinced himself was simply what surviving looked like. All of it slipped through his fingers the moment grey eyes met his own.
As though some forgotten part of his soul had turned a corner and, after wandering the earth for far too long, found its way home.
He had spent years believing he'd buried Sirius alongside James and Lily. Instead, he'd only buried the version of himself that existed beside him. Seeing him again felt less like finding someone lost and more like remembering how to breathe after being underwater for so long.
Perhaps lives did begin twice.
The first when you entered the world.
The second when the person carrying half your heart returned to you.
--
Grimmauld Place became their home.
Its walls still groaned beneath generations of bitterness. Dust lingered in forgotten corners, portraits spat venom from gilded frames, and every room seemed determined to remind them of the family his lover was desperate to leave behind. Yet slowly, almost imperceptibly, they changed it. A stack of books appeared beside the sofa. Two mugs remained on the kitchen table long after breakfast. Sirius left his jacket draped over the bannister despite Molly's protests. Remus folded blankets that would be unfolded again before nightfall.
Days slipped quietly into weeks until he could no longer remember where Sirius ended and he began. They orbited one another with the ease of people whose souls had recognised each other long before their minds had caught up. Sometimes they spoke for hours. Sometimes not at all. Silence had become another language between them, every glance and every absent-minded touch translating what words were not capable of communicating.
Remus had spent so much of his life trying to make himself smaller - quieter, gentler, easier to leave behind - that he'd forgotten what it felt like to exist without apologising for it.
Sirius never let him disappear.
Every month, when the moon rose and the wolf clawed its way to the surface, Sirius was there.
He learnt every version of Remus' pain until he could recognise it without a word. He knew when to steady trembling hands and when to simply sit beside him in silence. Some nights he spoke until dawn just to keep Remus tethered to the sound of his voice.
They built a world so small that only two people could live inside it.
And for a while, it was enough.
The curtains stayed drawn. Tea went cold on forgotten tables. Books accumulated beside their bed because Sirius refused to put them back where they belonged, and Remus secretly enjoyed this small act of rebellion. They cooked together, read together, slept tangled together.
There was Harry, of course.
Sweet, brave Harry, who encompassed the best parts of their friends - James' smile and Lily's eyes. They loved him more fiercely than either of them knew how to admit. But he was still a child.
Remus could never burden him with the things that kept him awake.
So, when nightmares woke him gasping, he told Sirius they were nothing.
When guilt hollowed him out from the inside, he swallowed it with his morning tea.
When memories surfaced - of Greyback, of the Whomping Willow, of James laughing across the Gryffindor common room - he folded them neatly back into himself.
Sirius did the same.
They never spoke about the night Walburga had slammed the door on her son for the last time.
They never spoke about the bruises that weren't always visible.
They never spoke about Severus Snape, or the cruelty that had once felt so easy to excuse because they had been sixteen and seemingly invincible.
They never spoke about Peter.
Or James.
Or Lily.
Or Azkaban.
Some wounds became so familiar that they stopped looking like wounds altogether.
Instead, they learnt to read each other.
Remus knew the exact expression Sirius wore when he was remembering the cell. Sirius always noticed the way Remus' shoulders tightened whenever the moon was mentioned. Neither asked.
Neither answered.
They mistook this understanding for healing.
Grief, left unchecked, has a curious way of festering just below the surface like a tumour, waiting to strike when you are at your most vulnerable.
By the time either of them realised the walls of Grimmauld Place were trapping more inside than they were keeping out, they had already forgotten how to open the door.
Until that one fateful night.
The message arrived like thunder splitting an otherwise ordinary evening.
Harry and his friends needs the Order’s assistance at the Department of Mysteries.
For a long moment, neither of them moved.
The house seemed to hold its breath.
"When was the last time we left?" Sirius asked quietly, breaking the monotonous silence.
Remus searched his memory.
He couldn't answer.
"I don't want to be apart from you," Remus whispered.
"You won’t – we’ll fight alongside each other.”
Memories of the First Wizarding War came rushing back with merciless clarity. Long nights spent huddled around Order tables. The frantic goodbyes that always ended with, See you tomorrow. The funerals that followed. The years spent constantly on edge – not knowing if or when you were going to die.
It was all too much, and for the first time in longer than either of them cared to admit, they allowed themselves to weep - not only for everything they had lost, but for the two frightened young men they had once been, who had survived far too much and received far too little in return.
"I'm sorry," Sirius murmured into the crook of his neck.
Remus frowned.
"For what?"
"For everything.”
The words trembled apart.
Remus closed his eyes.
"No."
"You don't have to forgive me."
"I'm not forgiving you because you didn’t do anything wrong.
Sirius stiffened.
Silence settled between them, heavy and sacred.
"When we make it home," Remus whispered, his voice trembling, "we'll stop pretending that everything is fine simply because we still have each other. Love isn't enough if we keep straining it under the weight of everything left unresolved.”
He rested his forehead against Sirius', his eyes shining with tears.
"We'll talk about all of it. About everyone who has ever left a mark on us - Walburga, Greyback, Peter. About James and Lily, and the life we lost with them. About Azkaban, and every day it stole from you. About every scar on my body and every scar you've hidden where no one could see. We'll speak about the boys we used to be before the war hollowed them out, and the men we became because of it. No more pretending. No more skirting around the things that have haunted us for years. We'll tell each other everything."
"I love you," Sirius breathed.
Remus smiled through tears.
"I know, I love you too.”
Sirius cupped his face with shaking hands.
"I need you to hear it.”
Remus almost shuddered from the intensity of the tone that Sirius had used.
"Not because you don't know - but because I've wasted too much of my life assuming you'd always have another chance to hear me say it. I loved you from the very first day I met you. I loved you when we were idiots who thought becoming illegal animagi was the pinnacle of good ideas, I loved you through every day we were torn apart, through every year I spent counting cracks in a prison wall, every night I would stare up at the moon in its various stages and think about how it doesn’t hold a candle to the beauty of your eyes.”
His voice faltered into something so deeply intimate it felt as if he was presenting his soul to Remus.
"And I'll keep loving you for whatever remains of me. Until my hair turns grey, until my hands can no longer reach for yours, until there's nothing left of me but my bones - and even then, if there's anything beyond this life, I think some part of me will always love you.”
"I love you too."
Sirius laughed tearfully then.
"Good, because I don’t know what I would do without you.”
They kissed as though time itself had paused to watch.
It was reverent.
A promise made between two souls.
When they finally pulled apart, Sirius pressed one last kiss against Remus's forehead.
"We'll come home," he said. "And then... we’ll talk about everything we’ve been avoiding.”
Remus affirmed his other half’s words with a nod.
Neither of them knew that this would be the last conversation they would ever share.
--
One heartbeat, Sirius was there, laughing as though he were a teenager again. For a fleeting, impossible moment, they looked like a proper family - him, Harry, and Sirius.
The next-
Nothing.
No hand to reach for.
No body to hold.
No goodbye.
Only empty air where half of Remus' soul had stood.
The world did not stop.
It should have.
Instead, it carried on with unbearable indifference, leaving Remus standing amidst the ruins of a future that had died before it had the chance to begin.
There would be no conversation.
No confessions whispered in the quiet hours before dawn.
No apologies.
No healing.
Only words that had arrived a lifetime too late.
From that moment on, Remus carried the unbearable weight of everything they had left unsaid, each unspoken word becoming another ghost he would never outrun. He no longer feared death; he only feared the years that separated him from it. And so, he waited - for the day Death would finally gather him into its gentle arms, where, beyond war and grief and time itself, his soul might at last find the missing half it had spent a lifetime waiting for.