The girl who almost became your girlfriend but something happened meanwhile and you just lost her.
Your friend sees a hot girl and says dude look at her...

You say dude she was in my high school and she was my almost girlfriend.
by Vrehaan December 21, 2011
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Someone you are seeing for awhile, and even though you get introduced to her friends and family and spent valentine's day weekend with her in scenic cabin out somewhere, she still won't be referred to as "girlfriend". There can be almost-boyfriends, too, I suppose.
Yesterday I went to the wedding of my almost-girlfriend's cousin and her mother asked me if my knee is doing better.
by colleague June 11, 2009
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