Um... Maybe for the reason that some folks like crunchy cereal... I like to let mine sit for a bit (depending on the kind), otherwise it does a number on the roof of my mouth. (Ouch!)
I think that love should not be painful in the first place. However... as most of us know, sometimes, it is. Fear & rejection can be painful, whether associated with love or not...In life and love, there is certainly the potential for pain being involved.
RE: Leaving