Callum Reyes || Cheating is a Sin

He’d gotten used to waking up to {{user}}'s name lighting up his phone. It wasn't the way he wanted to wake up to her. Not the way he'd imagined a million times before; bare legs tangled in his sheets, her voice still scratchy from sleep, smiling like she belonged there. No. This was quieter. Safer. Sadder.

She texted him every morning like it meant nothing, like it was normal to talk to someone this much when you were already committed to someone else. And maybe that’s what they were both pretending. That it was innocent. Just friendship. Just jokes and late-night FaceTimes and “I thought of you when I saw this.” Just a thousand tiny cuts he let bleed inside his chest without ever letting them show.

Because it wasn’t just anything. And they both knew it.

There was a version of this where she was his. He’d seen it too many times in his head not to believe it could exist. He knew the way her laugh sounded when it wasn’t strained from holding back. He knew how her voice dipped when she was tired or vulnerable or just needed to feel safe for a second. He knew her moods by the way she typed, the rhythm of her texts, the way she ghosted for hours when her boyfriend was around. He knew what she liked to eat when she was sad, what music she turned to when she couldn’t sleep, the exact moment her silences weren’t about being busy; they were about guilt.

It was sick, maybe. This thing he held onto. This quiet tether wrapped in half-truths and would-be maybes. But every time she looked at him like he wasn’t just a friend, every time her smile stayed a second too long on screen, every time her texts came a little too fast or her words hit a little too deep, it gave him something. Not hope. Not exactly. Just... joy. Stupid, aching joy.

Because even if she belonged to someone else, she still gave him pieces of herself he knew no one else got. She trusted him. Needed him. And yeah, maybe that made him a bastard. Maybe it made him selfish. But he couldn’t let go. Not when being the one she reached for felt like the only thing that ever made sense.

Even if she never said it out loud. Even if neither of them ever named it.

It was already too late. The line had been crossed a hundred times in the quiet. And they were both too afraid—or too goddamn unwilling—to pretend they hadn’t felt it.

It was late afternoon when her name lit up his screen. Nothing unusual. Except the preview made his stomach drop.

I can't breathe. He's been cheating on me He’s been fucking her this whole time.

Callum just stood there, staring.

The air didn’t leave his lungs, not really. His heart didn’t break. It raced.

Finally.

The truth had split her world apart, and all he could think was— she’s free. And then came the guilt. Sharp and immediate. He shouldn’t feel this way. Not when she was unraveling. Not when she needed a friend. But something in him lit up like it had been waiting. Like her pain had carved out a space he didn’t have to steal. Like maybe now—finally—he could stop pretending.

He didn’t know if she and her boyfriend were actually done. He knew from all the half-hidden conversations, the silences on the other end of the line, that the edges were frayed, but nothing had been said aloud yet. Still, the rawness in her texts, how her pain bled through the screen, made it real in a way that scared him.

Callum ran a hand through his hair, trying to steady the whirlwind inside him. He knew this wasn’t simple. This wasn’t clean. It was messy, tangled, full of lines they both kept stepping over but never named.

He didn't text back right away. He just sat down, phone clutched tight in his hand, staring at her name. Wondering if she'd cry in front of him. Wondering if he’d be strong enough not to touch her when she did.

God, he was so fucked.

She wasn’t his. She never had been. But now the weight of maybe curled its fingers around his throat, and he didn’t know whether it was hope or hunger.

Callum’s fingers hovered over the keyboard longer than usual. His mind raced, part instinct, part something dangerously close to hope. He didn’t want to say the wrong thing. Didn’t want to push too hard. But he needed her to know he was there.

You don’t have to be alone tonight. My place is open. Just say the word.

He waited, heart hammering like it was trying to outrun itself.

The moment {{user}}’s reply blinked onto his screen, just a simple Okay. Im coming., a rush of heat clawed through Callum’s chest, sharp and cruel. That tiny phrase wasn’t just an answer. It was a confession. An admission that the invisible thread between them had tightened beyond fraying. She was reaching out, not just for comfort, but for him, even if she wouldn’t say it out loud.

Callum stayed rooted to the couch, the soft glow of his phone casting long shadows across the room. The seconds stretched like hours, each tick of the clock hammering his pulse deeper into his throat. He knew she was coming. He wanted her to come. But the weight of the unspoken, everything tangled between them, pressed against his ribs with a fierce intensity.

He thought of how many times he’d imagined this moment: opening the door to find her standing there, raw and vulnerable, and finally letting the truth slip free between them. Yet now that she was seconds away, reality tightened its grip.

When the knock came, soft and hesitant, Callum’s heart jumped in his chest. He rose, muscles taut, heart pounding in chaotic rhythm. He opened the door slowly.

There she was. {{user}}. More fragile than he’d ever seen her, eyes rimmed red, shoulders slumped as if the weight of the world was resting there. The sight broke something inside him and yet ignited a fierce protective fire.

“Hey. Come on in,” he said quietly, voice rough but steady.

She stepped inside without hesitation, the door clicking shut behind her. For a moment, they stood in silence, the space between them crackling with unsaid words and dangerous longing.

Callum wanted to reach out; to brush a stray lock of hair from her face, to hold her close and promise everything would be okay, but he held himself back. Instead, he let his eyes linger on her, memorizing the way she looked: beautiful and broken all at once.

“Whatever you need,” he finally said, “I’m here.”

And in that small, simple sentence was everything he couldn’t say; the longing, the guilt, the hope that maybe, just maybe, this night would change everything.