Just remember�
Love comforteth like sunshine after rain
But lust�s effect is tempest after sun
Love�s gentle spring doth always fresh remain
Lust�s winter comes ere summer half be done
Love surfeits not, Lust like a glutton dies
Love is all truth, Lust full of forged lies
Lust can be lots of things, including the beginning stages of love. It depends. Baically it's a desire for something that is expressed physically.... whether you chose to express it physically with someone else is another matter.