A term used among women to describe when a man (or woman) they have been seeing for a while stops taking their calls and answering their texts. These actions are usually preceded by many a broken promise to "hang out" "have a drink or two" or "catch up" on the part of the Ghoster. The Ghostee is left wondering whether the person that was just inside of them two weeks ago is now alive or dead. Neither can be definitively proven.
I had been sleeping with Todd for about a year and a half before he Ghosted me. Even a "Fuck You" would have been better.