From
Care of the Soul (Ch. 4):
"A general principle we can take from Freud is that love sparks imagination to extraordinary activity. Being 'in love' is like being 'in imagination.' The literal concerns of everyday life, yesterday such a preoccupation, now practically disappear in the rush of love's daydreams. Concrete reality recedes as the imaginal world settles in. Thus, the 'divine madness' of love is akin to the mania of paranoia and other dissociations.
Does this mean that we need to be cured of this madness? Robert Burton in his massive self-help book of the seventeenth century,
The Anatomy of Melancholy, says there is only one cure for the melancholic sickness of love: enter into it with abandon."