Meth is by far the dumbest thing anyone can do (besides cocaine and crack cocaine). Whoever poisons themselves with something that isn't natural is stupid. Weed is something that you should have your body intake and indulge in. Meth is something that will change you from a good looking person into a trashy homeless looking person. If she had to sleep with your bro then leave her in the past and get a girl that is actually going to be there for you and like you for you.