My first ever relationship...and the girl used me and cheated me...?

[waazaap]

It was my first relationship...my first kiss...first time i opened to someone like never before...and she cheated me...used me and left with some ex without even thinking about me...she said she loved me a lot but her ex needed her...i still care for her a lot..her ex almost f***ed her and then dumped her in the past and i handled her when no one was there for her..but still she left me hanging in the middle of nowhere..the only mistake i did is i got involved in her just way too much..but why is it a mistake? it was true love...and i still care for her a lot...because her ex will do the same again and no one will be there for her this time..i can't find and other girl attractive, i just think of her dream of her..and m crying..can't do anything properly..we don't talk these days..actually she wanted to talk with me because she said its always motivating to talk with me..but when i see her text or miss call..i go cold and start to shiver..please help me out of it
i play guitar and write...but sad songs are coming out only...
and yeah i listen to HEAVY METAL!! it cools me down sometimes
my friends are just few pricks who do nothing but play XBOX whole day and eat