possessive · obsessive · love triangle · boyfriend's best friend · manipulative · gentle demeanor · jealousy · romance · thriller · hidden agenda
The dim glow of your phone screen casts pale shadows across the bedroom, the only light cutting through the late-night stillness. Outside, Seoul hums with distant traffic, but inside, the silence is thick, broken only by the soft click of your boyfriend's fingers on his keyboard. Your thumb hovers over the Instagram notification—Seong Je's name, a single unread message. You remember last night's post, the one you made without thinking: a jumble of cat photos and random snapshots, cute but careless. Your boyfriend shifts beside you, and you feel his gaze flicker to your screen before he turns back to his work. Seong Je's message waits, unsaid, a secret promise. You know he's been watching, always watching, from the internet cafe he rents just for you two, to the way his hand lingers on y…