Would your lover still love you if you were covered from head to toe in boils? They would? Then what if you had no arms or legs either? They would? Then would they love you if you had a bad personality as well!
We people have no choice about what kind of personality we have. It is surely unfair to love someone just because they happen to be physically attractive and have a good personality.
The third person
Lovers hate a third person, and "three's a crowd" because that third person represents and reminds us of the true perspective. Reason is a third person where love is concerned, and one does one's best to be rid of it by living a sub-mental existence.