I'm so depressed I can't find a good friend :( ?

I had a bestfriend when I was 15 years old we had that very special relationship she was the one I count on and she counted on me as well,,, life felt so easy everything seemed to have a solution.. however 3 years later she told me that she loves me and I felt the same as well,,,,, then for some reason she told me that her feelings has changed nd she ended everything ,,, starting that day I search for som1 who can give me the power she used to give me but every single time I get backstabbed and this is IMPAIRING MY LIFE :( ! HELP !