Passionate/excessive love is a disease that one must ward off by any means necessary. If you're going to love a woman/man, do so moderately. Excessive love was actually considered a sickness by the brilliant minds of the middle ages.
As one poet affected by this said:
"For the sake of a Sudanese girl he loved Sudan to the point that he loved the black dogs due to his love of her."
So he loved a black girl, and therefore loved all types of black even the blackness of dogs!
"Romantic love is based on an idealized notion of the other person, which requires remoteness—psychological, physical, or social—to be maintained. Hence the inherent paradox: romantic love desires intimacy, but at the very moment of intimacy, love evaporates."
However women are more prone to falling very hard, they're very active in seeking out love from a very young age, so they suffer the most from this affliction; while men may suffer from rejection in varying degrees during later years.
As one poet affected by this said:
"For the sake of a Sudanese girl he loved Sudan to the point that he loved the black dogs due to his love of her."
So he loved a black girl, and therefore loved all types of black even the blackness of dogs!
"Romantic love is based on an idealized notion of the other person, which requires remoteness—psychological, physical, or social—to be maintained. Hence the inherent paradox: romantic love desires intimacy, but at the very moment of intimacy, love evaporates."
However women are more prone to falling very hard, they're very active in seeking out love from a very young age, so they suffer the most from this affliction; while men may suffer from rejection in varying degrees during later years.
black dogs deserve love too 
I think that poet began the emo movement.