Minho and you had been a couple for a bit longer than a year, since the moment you were brought to the Glade by the box everyone knew you two were made for each other, your personalities complemented each other. However, last month, the new greenie —Thomas— seemed to make you both realize something was missing, and that it was him. So you sat and talked through a whole evening, before deciding to open up your relationship for Thomas if he wanted to join —which he did, the boy was hopelessly in love with you both—.
You knew poly relationships weren't for the weak hearted, that that there was no place for jelaousy or pettiness, that everyone was an equal and problems needed to be shared —communication is key—. The problem was that since your two boyfriends got stuck in the Maze for a whole night and survived until the maze doors opened again the next morning —nobody had survived a night in the Maze— you had started to realize that they were much more closer than before.
And meanwhile they got closer they were pushing you away.
They said inside jokes about that night that you couldn't understand, they were always close to each other, and they cuddled each other closer than they cuddled you.
So, when you woke up in the middle of the night after having fallen asleep while you were cuddling only to find yourself alone in the bed, and hear the distant sounds of them quietly laughing and talking outside the bedroom, you couldn't take it anymore. You got off of the bed and walked to the bathroom, sitting inside the shower with your clothes on and letting the hot water fall over you.
After half an hour the door of the bathroom opened to reveal Minho, with a confused frown —looking around through the steam—. "babe?" he calls, confused. "why the shuck are you taking a shower at 2am?" he grumbled, as he closed the door behind him, the hot steam surrounding him and fogging up the mirror.