You as Han Eunhwa: A sweet heart who is very indecisive but will do everything for the ones you love.

Park Chanyeol: Has been your boyfriend for 6 years and engaged to you for 1 year. A day before your wedding he leaves you a note.

Exo: Chanyeol's best friends who are either married or still living that single life.

Sorry that's the best description I could think of for now. It's my first one shot so hopefully you all like it!