You pick her over me

Seeing you with her
kills me inside
some how it makes my life seem like a lie
you love her so much thats plane to see
but what about my me and my dieing heart
whats to become of me
she took my world apart so easily
and took my first love from me
i cant call here a demon
cause you love her so much
but i cant call her an angel
cause of what she has done
to take away my trust
you said it was just innocent fun
so way did you say we were done
then turn around
and kiss her on the cheek
why did you pick her over me?