This is how I would go about it:
> Buy your bus passes and get a schedule a week early
> Throw a temper tantrum the night before about any random topic and say your not talking to your parents.
> Make an obvious mess in the kitchen to make it look like you made breakfast and went to your room.
> Set your radio to go off at a certain time and lock your room door.
> Escape through the window, and if you're on the second floor like me, use the trampoline thats convienently placed below my window. >.> Or rather sneak out incredibly quietly. *
> Go to your boyfriends house.
* Oil any rusty hinges on the door you plan to sneak out from and muffle the sound of unlocking with a cotton cloth or maybe a thick sweatshirt.