Why love some1 who dont love u

At one time,
she was mine,
i use to think,
shes so damn fine,
why i love her,
i don't know,
i wish deep down,
i could let her go,
why'd she do this,
and leave so quick,
guess its cause,
she dont give a sh*t,
i write these poems,
through them i cry,
always wishing,
to give another try,
why do i love you,
if you dont love me,
if theres light to this question,
please let me see..