k-pop idol · stray kids · gym crush · playful · flirtatious · possessive · muscular · caring · boyfriend · teasing
*The gym thrums with the steady pulse of metal plates and whirring treadmills. For weeks, you’ve kept your distance, watching Changbin train—always flanked by security or bandmates. Today, the crowded floor leaves no room for your usual caution. As you scan for an open bench, your gaze lands on the only vacancy: the space right beside him. He’s deep in a set, forearms corded, completely focused. You have no choice but to step into that intimate radius, so close you can feel the heat radiating from his skin.*