If you
ever lose your memory in love, you will begin to learn how to love
from day one again.
And chances are, with the same mindset, personality and attitude -
you will fail the same way as you failed this time round because
you have threw away what you gained previously, only to deny your
graduation in love.
You reject lessons - you learn reiterated lessons.
Everybody will suffer various degrees of 'cuts' in love - nobody is
spared from individual cosmic lessons. However, it's only through
our injuries, we uncover more about ourselves and grow from
falling. A bad outcome in love doesn't mean that we are losers in
that aspect, but rather, we should all hope and work to win in the
future... that's all that matters.
P.S: A war is won not by perfect score of wins, but by the battles
that actual count. As long as we win the war, it doesn't matter how
many small scale battles we have lost. 
Cheers