Love created by Attraction

What is love? Is it just the attraction, or something else? Why is this just happening to me? The feeling that I want to express here may be found the same to others too. First of all, the boy meets a girl. He keeps on friendship with her. The boy then meets her daily. After a month, the boy feels a sense of love in his heart. Then he, perhaps may not, express his feeling but the seeds of love grown inside his heart is true. Incase if, they parted or may be they didn't meet for a week or month then the boys' heart becomes normal. He has got no feelings like before towards her. Then again he meets another girl. And the same case happens here too. He falls in love with the girl too. In this case, what can be said, the love which should be pure and spiritual has just become nothing than that of attraction. Same can be the case of girl too but most probably I have found this case in boys. Relating to this age, this is the true fact. May be it is bitter but truth is truth.