Suckershifter
A girl who a guy tries to get on a date then stands him up more than once to the point the guy thinks she wants to be with somebody else, so he looks for somebody else, only to get accused of not really having ever loved her once she's already with somebody else.
The girl played the guy for a sucker, then accused him of playing her for one. She was good at what she did, being the suckershifter that she was.