You were never "just another guy" to me.  But I became "just another girl" to you.  You don't think about me, or how I am feeling, or how something will make me feel.  I am hurt.  I am angry.  And I don't think you deserve a place in my life right now.  You are oblivious.  Whether you choose to be that way or really are, I don't know.  But I can't deal with it anymore.  I don't feel important, appreciated, or needed in your life.  So, why put more effort in than I am getting?

Please, leave me alone for a little while.  I need my time.