Sixthly: you think a lot about your ex-partner. Everything reminds you of that person. You remember so much of his or her past injustices that it's like feeling it all over again. You wish you could have avoided what happened, re-plan it, imagine what you should have done... To remember is, of course, part of understanding, and so to be healed, some analysis is called for; but this kind of memory is passive, and it is making you feel helpless and bitter about the past.
