"Why legit" you ask?  Simple.  It's because it's not about two girls liking the same guy or two guys liking the same girl.  Instead, it's me liking him but he likes another guy but that guy likes me, instead.  Now you get why it's legit?  It's because it actually makes a triangle.

A girl named Park Hyejin likes Lee Sungjong but she doesn't know that he was hiding something..... His uality. He admits that he's gay but nobody knows about it except for his two best friends Gina and Hyosung.  Sungjong, however, is in love with Myungsoo. Myungsoo is Hyejin's best friend who secretly likes her but he never did confess to her.  So when Hyejin asked Sungjong out and Myungsoo happened to pass by, Sungjong says yes just to get his attention.  But he also have another motive in his mind. Getting a girlfriend who is the closest person to Myungsoo/the guy he likes means getting close to him as well.

Now where do you think this complication will take them.  Will Hyejin somehow change Sungjong?  Will Sungjong succeed on making Myungsoo his?  Or will Myungsoo's kindness finally attract Hyejin and realize that the guy she likes is actually him?

"Hyejin, right?  Sure I would like to go out with you."

"She's pretty no doubt about it."

"Mianhe, I don't know how it feels like but I know it's a pain greater than all the pain I've gone through combined."