I love the a girl that has made me depressed.

My ex girlfriend has ruined my life she outted me to people when i told her I was Bi she said she didn't care and wanted me all the same but then tells her friends about it she slept with someone who I thought was my friend and she led me on for 2 months straight but when I still look at her all I see is the girl that I fell in love with she smokes now drinks she is a different person but I love her I want to save her I want her to want me to save her Im just so upset and depressed I love someone who has made me so sad someone who has told people my biggest secret but i want her.