FUCK YOUR GIRLFRIEND SHES PROBABLY A BITCH ANYWAYS, DONT DO YOUR HOMEWORK, I NEVR DO IT AND I GT OFF SCOTT FREE, AND LACE YUR WEED, HOW OLD I YOUR SISTER?
Now what would be funny if it was your sisters fault that your girlfriend cheated on you, because she convinced your girlfriend to have a threeway with her and your bestfriends brother, but since they were all high on YOUR weed, it was A-OK.