Fools fall in love because its a trickery of the mind. As neuro-chemicals that fuel the brains built in reward system triggers, the brain releases dopamine using the desire for sex. Serotonin levels plumet, creating that 'cant live with you' feeling. The attachment chemicals also kick in at this stage, and you either go with it, or disregard it. It's more of an illusion, than anything. Love is only an emotion and the 'in love' experience temporarily meets that need. In other words, it's an an emotional obsession and it's fiction rather than fact. Falling 'in love' is not an act of the will or a conscious choice, it is not real love neither because, its effortless and the 'in love' experience does not focus on our own growth and the growth and development of the other person involved. So, thats all the reasons why, and its easy to fall 'in love' with someone so quickly, as falling 'out of love' and re-continuing the cycle of addictiviness.
There you go, my own interpretation
Where do the words that we talk, come from?