Not According To Plan (Billdip)

(4 Years Later)
In order for Dipper to save Gravity Falls, Dipper made a deal with Bill. A deal that would require his sister. Mabel. Bill has plans with Mabel and Dipper knew this. Dipper then developed a plan on the spot resulting him to leave everything behind. Dipper would take Mabel's place. But it wasn't going to be easy. Dipper had to dress up and act like Mabel. Not making any things easier but Bill has plans for him.
What if Dipper can't pull it off?
What if Bill finds out?
What if the plan backfires resulting Dipper to fall in love with him?
How will Bill feel?

Author's Note---> This is my first time writing a gay fanfic?? So it might not be great. Maybe I would edit it after getting use to writing stuff like this.