My Omniscient Aggrivator (Older Dipper X Reader X Human!Bill)

Your name is y/n, and your parents have decided to send you to Gravity Falls for the summer, where the Pines family has decided to take you in. Little do you know that you have caught the eye of a dangerous dream-demon who would like to make a deal. {I surely cannot summarize for crap, but this is going to be a long fanfic. I rarely do one-shots}.