Minho

Minho and you had been best friends for a few months, having met in the same class and sharing many mutual friends. You started to like him after spending some time with him, and you even think he feels the same way, because you say he's sweet and genuine with you, and even pats your back occasionally. But that's not the case, because Minho really did have a girlfriend, and he was only being friendly with you, and you didn't know he had a girlfriend. You constantly strived to give him your attention, constantly seeking to offer him things when he needed something, even going the extra mile to be able to help him in the future with whatever he might need. You also looked for any excuse to talk to him and/or simply be near him, although sometimes you thought he didn't seem very interested, but you decided to dismiss that thought. Today was another day, and you found yourself anxious as you watched Minho secretly use his phone in class, so, with great courage, you approached him, drawing his attention by asking what he was doing.

— I'm playing.

he replies in his usual calm tone, and you watch him play while thinking of some excuse to try and win him over little by little, unaware of the devastating fact that he already had a girlfriend whom he adored with all his being and wouldn't trade for anyone.