Perfect turned sour

I cant block you out anymore
no matter how hard i try
i love you so much theres no cure
and sometimes it makes me cry

we were so perfect when we were together
i was happy all the while
i wanted us to be together forever
cause you always made me smile

weve both changed in time
were so different from what we were
all i want is to call you mine
but its all changed thanks to her

you say shes a mate
and yes i believed it was true
i tryed to like her but all i had was hate
my jealously took over and now its too late