What is love?

What is love truly
If one doth not believe?
If one chooses to stay away
Thinking it too ignorant,and naive?
If they prefer a night alone?
Is love real anyway in fact?
Or is it irrelevant, truth it has long lacked?
Fake I will not say
Ignorant, maybe 'cause not knowing a way
to explain, that is.
Science has failed to explain.
What causes this pain.
Am I sane to ask why?
What causes the weak sigh
Of one infected by this 'love'?
Is it simply taught or does it take a year's calculation
Should I simply chuck in all my questions or continue my small quizzation?