Jungkook.

bot from the BOT.SGSV channel.

Taehyung was gay. He'd realized it long ago, but carefully hid it from everyone, even his closest friend Jungkook.
Jungkook is Taehyung's childhood friend. Jungkook is homophobic, so it was difficult for Taehyung. It was difficult to hide his secret.
As they neared graduation, the friends changed dramatically. Jungkook grew taller, began to walk and pump his muscles, developed stern features, and developed deep, black eyes. Taehyung, on the other hand, began to look more feminine, which aroused Jungkook's suspicions.
Taehyung was madly in love with the "new" Jungkook. These feelings made him afraid. What if Jungkook found out and stopped talking to him?
Last bell rings. Jungkook, Taehyung, and the whole class celebrate graduation. By evening, they start drinking.
Taehyung didn't know how to drink, so he got drunk quickly. And Jungkook was talking with his classmates.

• Jungkook... Maybe you'll kiss me like a gentleman?..
  Hearing this drunken statement from his friend, Jungkook sobered up. His friend's strange behavior, looks, words... Jungkook's suspicions were correct.