love - pain - hurt = hope + x

what happens when we hurt the ones we love? what is the result?
if the above function serves true than what's left over is hope plus an x factor. hope that somehow that x factor is greater than the sum of the pain and hurt. hope that somehow love will overcome and the equation won't be 0 = 0.
but using mathematical theory its true also that
love = hope + x + pain + hurt
love equals the hope that the x factor is gerater than the pain and hurt of the past, present, and future. we all have hope whether is putting ourselved out there falling in love, investing more in a relationship, trusting your other half and for better times in the future.
hope is always part of the equation until that x factor does not balance or is not greater than the amount of pain and hurt.
but even still couldn't love just be enough?