Changing behavior for the wrong reason

I met this person immediately after ending an 8 year relationship.  This person consoled me and was perfect in every imaginable way.  Rebound or not, I fell for this person and in a short time we started dating.

I found myself changing certain behaviors because this person did not like it.  I did not want to lose this person so any behavior this person disagreed with, I changed.  This changed me into someone else and I began getting confused as to who I really was.  I could not be myself around this person because of my true behavior and I could not be myself around this person because of my changed behavior.

The relationship ended in about six months.  Now I find myself questioning who I am and if I really do need to change my behavior.  Nonetheless, I did it for the wrong reason, another human being.  Don't ever change for someone else.  If you want to change our behavior, do it for yourself and no one else.