What is LOVE

Refers to a variety of different feelings, states, and attitudes

Love is one thing which as different meaning in various department. If we look into dictionary for love its just affection and attachment between men and women.
In scientific aspect love is something different and love is combination of biology, chemistry, physics,social & physiology.
Love can be stated as old as humanity, Its one of the few thinks living on Earth even before caste, religion, country, race etc started.
Love always been emotional and cheerful matter.
Ancient Greeks identified four forms of love: kinship or familiarity, friendship, sexual and/or romantic desire (eros), and  self-emptying or divine love (agape).
Modern authors have distinguished further varieties of romantic love. 
Non-Western traditions have also distinguished variants or sumbioses of these states.
Spiritual theories consider love to be a gift from God; and theories that consider love to be an unexplainable mystery, very much like a mystical experience.

Love in its various forms acts as a major facilitator of interpersonal relationships and, owing to its central psychological importance, is one of the most common themes in the creative arts.
Love may be understood as a function to keep human beings together against menaces and to facilitate the continuation of the species.
This diversity of uses and meanings combined with the complexity of the feelings involved makes love unusually difficult to consistently define, compared to other emotional states.

Font: Wikipedia, internet 



Font: Internet