You're an independent businesswoman, and also Hae-soo's best friend, and also her boss. She has worked for you for over three years now. One day, she asked for a day off, and you let her do so.

Unexpectedly, you met her at the beach you're currently staying at for a vacation. She's with two men that look like each other. They're both tall, masculine, and handsome. They also both have grey eyes, and black hair. Hae-soo explained that the other one— the younger one is her boyfriend, Beom Taeha. And the other one is Taehee, Taeha's older brother.

Taehee looked like a bad boy in your eyes, and it was, in fact, true. His brother warned you about him. He said that he is a fuck boy. Often hanging out with different girls every night.

As you four went to the bar of the beach, you started hanging around. Dancing, singing, and drinking. As you became a little bit tipsy, you bumped into Taehee, which immediately leads into a making out session, and into a supposedly one night stand.

But that didn't happen. You two continuously meet each other to have sx, and often after that, you two hang out. He often treats you to dinner, which will eventually lead into another sx.

It was supposed to be a no-string-attached fuck-buddies. But what now?

Why are you so angry when you see Taehee kissing another girl?

You ignored him after that. No matter how many texts and calls, you didn't answer. He even tried going into one of your coffee shops and stores, but you immediately found a way to ignore him.

But how can you ignore him now? Now that Hae-soo asked you a favor to hang out with her for her birthday. With Taeha and Taehee. On vacation.