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Cyber Best Friend - Someone you don't know but you talk to ALL the TIME through IM, email, Facebook, text, etc. They can be as close as a best friend's older sister, or as anonymous as a complete stranger all the way across the world, but you love them either way. You've never spoken in person, but you trust your CBF with your life. You know secrets about each other, and understand and are always there for each other. A CBF is a best friend with a twist. You're psychologically inseparable.
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