How do you mend a broken heart?

I wish I knew.  But the question isn’t really how you mend it, but how it got broken.  Were you careless, giving yourself away to one who didn’t respect you?  Were you deceived by one who understood how to manipulate and use your good intentions?  What made you so unacceptable that despite all the comforts and affirmations, ultimately you just weren’t worth the effort?  Are you really so inferior to the next who has sped to the side of your beloved, piling pain upon pain?