I have a tendency to date addicts, i myself was a meth user and from the sounds of it youre friend is using a lot we will say anything to minimize what were doing because others tend to make a big deal and were forced to see it. Lie minimize and hide it so attention isn't being put on drug use..i have been off meth for years, and i am not sure about any withdraw symptoms but i can tell you the come down off meth had me wanting to kill myself, the sadness, paranoia and depression, mood swings..i would just keep high so i didn't have to come down. once i did, i slept...if i could..there were times i was sleep deprived i just cried until i could finally fall asleep.