half of my heart

Your faith is strong
But I can only fall short for so long
Down the road, later on
You will hate that I never gave more to you
Than half of my heart

Half of my heart's got a real good imagination
Half of my heart's got you
Half of my heart's got a right mind to tell you
That half of my heart won't do

too right john mayer. half a heart just doesn't do.