if you find yourself in love with someone, and that someone does not love you.. be gentle to yourself, there is nothing wrong with you, but love just did not choose to rest in that someone's heart.
if you find someone in love with you and you cannot answer that love.. feel honoured that love has came by and called on your door.. but gently refuse the feeling you cannot return, as love did not choose to settle in your heart.
if you find yourself in love with someone and the love return.. it still can happen that love chooses to leave.. do not try to reclaim it and do not access any blame.. let it go. despite the pain, there is a reason and meaning to this.
you cannot choose love by yourself, LOVE CHOOSES YOU with Allah's will.
p/s : things happen for a reason, just believe. yah, TRUST HIM.