One

As soon as dipper and Mabel turned 18 they were out of there, and moved to gravity falls with their grunkles. But when the pines family figures out that dipper has been keeping a lifelong secret from them, they pass it by and accept him still, but what happens when they discover that bill and dipper are "a thing"?

!DISCLAIMER!I DO NOT OWN GRAVITY FALLS! (thank you for your time)