You loved her and she loved you
You have a busy life style and still managed to spend little time.You thought she is your life patner and never thought of leaving her.
She moved to New place and got new friends and had new life. Now she got new one who spend more time with her.
She left you and she was happy now.
Now you are tears you never expected this and you never even dreamed of it.Now she don't want to be in contact with you any more and want to forget her past.
She will slowly learn in the early stage of love everything looks wonderful.
But slowly if you compare with your past present will never look ok