GET A GRIP!!!!!
I do understand the feeling of emptiness. However, it is obvious that you suffer from low self esteem and I believe that is a reason for people walking out on you.
Take control of your life, Live!!!! and learn how to live by yourself. Who knows, it may be better for awhile, finding out more about you and loving yourself. People, whether it be girlfriends or others will not appreciate you until you appreciate yourself.
So even though it hurst unbearably so.... Get up go to the beach, read a book, go to church, learn more about what makes you tick and then... if it is God's will you will find a love that will accept you for your shortness and then you'll be happy.
Live and be well
Blessings!!!!