What do you do when things turn sour with all of your friends?

Turn into a fucking hermit.
Delete your Tumblr, Twitter and Facebook.
Wallow in your so-called misery.
Wonder what you had done wrong to deserve having people turn their backs on you.
Mope.
Eat.
Rant.
Die.
Write a dumb blog entry about it and hope to God that no one reads your rusty old blog anymore.
Ask yourself why the fuck all the angst is coming up now that you're months away from not being a teenager anymore when there was barely any angst well into your teenage years.
Bitch about everything, even if no one ever knows about it.
Reevaluate your approach on relationships because, surely, the problem is coming from you.
Bang your head on the wall for being such a dependent, overly-attached little sap who never learns her lesson.

Then again, all the sourness is one-sided, so there's nothing you could do about it.

Other than to bear it and hope that it passes quickly.