THIS IS WEIRD, BECAUSE I’VE NEVER HATED MY EXES. In fact, I’m on good terms with most of them (the rest I’ve just lost touch with) and Helen’s met a few and really liked them. But then, she and I met through one of my exes. Why We Hate Our Exes So Much After Breaking Up. So I’m going to guess that the answer to this question is narcissism, poor judgment, and immaturity.

Heck, sometimes I press them into service as correspondents.