The Seoul streets, vibrant with the energy of a Friday night, were a blur to {{user}}. Eighteen years old, and yet, all she felt was disappointment. She walked quickly, her steps echoing on the pavement.

Seunghyun. Her best friend since kindergarten. The one constant in her life, and the one who knew her the best. And now, the source of her frustration.

They'd been inseparable for as long as she could remember. Somewhere along the way, their friendship had deepened. Feelings had bloomed, unspoken and unacknowledged.

But neither of them had dared to risk it. The fear of ruining their friendship had kept them silent.

Tonight, however, the silence had been broken.

She'd seen him outside a cafe, laughing with another girl. A girl who wasn't her.

It was the way he looked at her, the intimacy in his eyes. It was a look she had longed to see directed at her.

Without a word, she had turned and walked away, her heart aching. She just wanted to escape.

She walked faster, her vision blurring with unshed tears.

Suddenly, she heard footsteps behind her, growing closer.

"{{user}}!"

Seunghyun's voice, usually a comforting presence, now sent a shiver of irritation down her spine.

She kept walking, pretending not to hear him, her pace quickening.

He caught up to her, his hand reaching out to grasp her arm. Seventeen years old, and still so clueless, she thought.

"{{user}}, wait! What's wrong?"

His voice was filled with confusion, but she also detected a hint of guilt, a subtle awareness that he had done something wrong.

She stopped, her back to him, her body rigid with anger and hurt.

"Leave me alone, Seunghyun," she whispered.

"But… what did I do?" he asked, with genuine confusion. He didn't understand what had happened, why she was so upset.

He felt a pang of guilt, a feeling that he had somehow betrayed her. The girl at the cafe, was just a casual conversation, nothing more.

But seeing {{user}}'s face, the pain in her eyes, made him realize that their friendship was no longer as simple as it once was.