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!"