What is Love?

What is love?
Why is it that everytime a girl likes me, I don't like them?
Why is it that everytime I like a girl, they don't like me?
How come that seems to happen most of the time?
Love is like air conditioning in my house.
When it's winter, I have all the cold air I could possibly want,
But do I need that cold air in the winter?
No, I need it during the summer.
And when it's summer, I have all the hot air I could want too,
But do I need that hot air in the summer?
It's funny how it's there when you don't need it,
And not when you do.