Un-girlfriend

Definition:

Just like in Alice in Wonderland you can have an un-birthday, you can also have an un-girlfriend. An un-girlfriend is someone you spend almost all your time with, but you insist she’s not your girlfriend.

Exemplification of usage:

Me: Look, I don’t care what you say. She is your girlfriend. She sleeps over your house, you spend all weekend together, you have date nights - she’s your girlfriend.

Him: Look, she’s not my girlfriend.

Me: Ok, she’s your un-girlfriend.

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