Hi! I hope someone can help, I've been trying to remember the name of this Drama for years.  So its about a girl who thinks she's incredibly beautiful but she isn't (according to the drama).  Her best friend is the "beautiful" girl that should be the main character but isn't.  There is this guy who is trying to pursue the best friend but the main charter always thinks he's there for her.  He ends up dating the best friend while the MC thinks she's dating him.  They even get engaged and she STILL thinks he's engaged to her and not the best friend.  I never got to finish it.  I really hope someone can help me. Thank you in advance!