One of these days you will find him... again. We have to stay positive no matter what... The right one will never give us reason to let go.
I doubt that any relationship lacks sticking-points where a partner is triggered by something or has trust issues that have nothing to do with you, but which are nevertheless difficult and/or disappointing at times. These need not be fatal to a relationship, but as others have pointed out, if it's chronic then it does kind of defeat the purpose.