It’s always flattering when a woman is into you. But what happens when she’s a little too interested? There’s a fine line between clingy and concerning – and your ex-girlfriend (or prospective partner) may be crossing it…. “After a breakup, unfortunately, some people can deteriorate psychologically,” said York University psychology Professor Robert T. Muller in Men’s Health Sept. 30. While people without a history of mental illness can fall into stalking habits, too, depression and psychological stress can exasperate underlying issues such as paranoia or bipolar disorder. If her personality seems to have taken a drastic change, it could signal something more complex than the typical breakup woes, says Muller. Read full story.