Well I dont know the exact definition of "turn their back" but...
Yes... since february this year, a group of my friends have turned my back in some kind of way... by freezing me out. In february, they asked me to drink, and smoke **** and I said nope forget it and ever since then they havent said a word to me. One day I'll go over to that place and ask them what the **** that is for a style. Anyway, no questions "why wont you smoke and why wont you drink" because the answer is easy... I wanna do something with my life, become something. You can always say "you can become something even if you smoke and drink" well okey, when you are a rich, famous, intelligent, skillful man.. Please come to me and I will admit I'm wrong.
And even if you as a human being always needs to be there for people - I dont need those people, even tho they need me, but if they do understand whats happening, I wont turn my back.