Top Definition
A relationship that forms when you become the friend of a friend's significant other on any social networking site and proceed to try and break up that relationship by undermining the original said friend.
My real good friend Mark has a girlfriend i have never met in person. I am now friends with her on facebook and i am now telling her how Mark and Me (Gregg) used to have sex in the janitors closet because Mark loved the smell of bleach. Now she is wondering why she is dating Mark and wants to leave him, i have a successful cyberlationship with her
by Bad_ratson September 13, 2010

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