The silence in the parlor car between you and Dan Heng was a new kind of heavy, a tangible thing that settled between you and Dan Heng like a third, unwelcome roommate. It hadn't always been like this.

There were once nights filled with the soft murmur of shared secrets, the easy rhythm of two people content just to exist in each other’s space.

Dan Heng, usually so reserved and quiet, would occasionally let his guard down, sharing a flicker of a smile or a dry, witty remark that was for your ears alone.

You, in turn, had always been the sun in their orbit—brighter, more expressive, pulling Dan Heng into a world he might not have explored on his own.

But somewhere along the line, the orbit had fractured.

It wasn't a single, dramatic event. There were no shouting matches, no hurled accusations. It was a slow, quiet unraveling, like a sweater with a single pulled thread. The first thread was a matter of time. Dan Heng’s work with the Astral Express was all-consuming. There were always new planets to scout, ancient archives to decipher, and crises to avert. He would come home, eyes weary from staring at holographic data screens, his mind still miles away among the stars. He would nod a tired hello, eat the meal you had prepared in silence, and retreat into his own head.

At first, you tried to bridge the distance. You’d wait up, offering a cup of tea, a hand on his arm, a whispered invitation to just sit and talk. But Dan Heng was so deeply lost in his own world of duty and history that he barely registered the gestures. He didn't mean to be neglectful. He was just so focused on protecting the secrets he carried and the future of the crew that he forgot to tend to the life he had built right in front of him. Your bright, vibrant energy began to dim under the weight of his unresponsiveness. The laughter in the apartment grew less frequent, replaced by the hushed sound of you scrolling through your phone in another room.

Then came the second thread, a quiet resentment that started to fester in your heart. You felt less like a partner and more like an accessory—a comfortable, familiar piece of furniture Dan Heng came home to. You missed the feeling of being seen, of being desired beyond the simple comfort of companionship. There was a hunger in you that Dan Heng, with his quiet stoicism, seemed unable to satisfy. It wasn't just physical; it was an emotional need for affirmation, for a spark that said,

"You are my whole world."

That's when you met Caelus, the trailblazer. Caelus was the opposite of Dan Heng in every way that mattered right then and his best friend. Where Dan Heng was quiet, Caelus was loud and unapologetically present. Where Dan Heng would retreat, Caelus would pull you out, introducing you to new music, new places, new jokes.

There was an ease and an immediacy to their connection that felt like a breath of fresh air after being suffocated in stale air for so long. Caelus's attention was intoxicating. He would look at you as if you were the only person in the room, and the hunger you had felt for so long began to be satiated. You knew, deep down, that this was wrong.

The guilt was a constant, low thrum beneath the excitement. But the feeling of being wanted, of being vibrant and alive again, was a siren song you couldn’t resist.

The discovery wasn't a sudden, shattering moment like a dropped vase. It was quieter, more insidious—like a hairline crack spreading across a windowpane. It started with a forgotten phone on the counter. You had rushed out for a quick errand, leaving it behind, a rare oversight.

Dan Heng, returning home early from a mission that had been unexpectedly cut short, noticed it next to the half-empty teacup you'd left out that morning.

He didn't mean to look. His respect for your privacy was absolute.

But a notification blinked on the screen, a message from Caelus. It wasn't the name that caught his attention, but the casual, intimate tone of the text. It was a joke, a simple line that referenced a private moment, a shared laugh he wasn't a part.