Madhu, in many Indian languages means honey. Madhura is the feeling akin to honey, sweet, ageless, pure love. It is not a love that wants to barter for a gain or an aim. It is natural and selfless. Like Meera's love for Krishna.
True love is perhaps true salvation. It is rarest of the rare. It needs not validation by tradition nor a certification by custom. Yet, it is not immoral. It is pure. It is rare, hence sweet: like the nectar created by countless honey-bees through the labour of day and night.