The belief that one is unable to find or keep a female companion in a relationship. It may be an irrational belief in an individual, or a put-down from someone else.
"He's kind of a recluse. He believes that he's ungirlfriendable."
A girl who is not your girlfriend but offers the same benefits. Much like 7Up, you like it... it likes you! A title for those guys who are afraid of commitment. A little like a fuck buddy, but one step up, maybe a bit of like/love. Did I say love?
To be unfriended by your boyfriend/girlfriend(s) over Facebook. Typically refers to such relationships which were maintained solely through the use of cyber-sheep or virtual roses or Farm Town pumpkin seeds. Can also involve the unfriending of all your relatives.
girl: "But why have you ungirlfriended me? I thought we had something special?!?"
guy: "Yeah, I was like, totally into you, but you know, you just don't appreciate the value of scare crows!"
girl: "You ungirlfriended me ages ago!"
other girl: "I just didn't like the way you sent an invite to Tom before I did..."
first girl: "Get over it! It's just Cafe World! He doesn't even play it anymore!"
A girl who can not agree or disagree to being called your girlfriend and likes being celebrated every day as your girlfriend, (as Alice in Wonderland celebrated her un-birthday 364 days of the year) but is reluctant to accept the label of girlfriend because she is in denial of being someone's bae and non-committal to a stereotype she has clearly become and not been since high school.
One day before meeting up with friends, I asked "the girl I have been dating" how should I introduce her, suggesting that we are past the friend-zone. She jokes with a smile, "how about with un-girlfriend?" and kisses me on the cheek.