When you are in a relationship, you sometimes build an "us vs. them" kind of narrative; each of you acknowledges that the other person is the only one who really "gets" you.  This bond can be precious, and when you are knee-deep in shit, you can always look with comfort towards your relationship and your partner who will sympathize with you.  When they break-up with you, it feels like the deepest kind of betrayal.  They'll say they still love you or want to be friends, but you have been stung with the realization that they don't share the kind of bond you thought you had.

Enter Black Flag's "My War": "You say that you're my friend, but you're one of them!" 



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