Does Love Exist? Science has the answer

Attraction
In the second stage, you begin to obsess about your lover and crave his presence. Your heart races and you don’t feel like sleeping or eating. You may even get sweaty palms.  You feel a surge of extra energy and excitement as you fantasize about the things you’ll do together. These feelings are created by three chemicals: norepinephrine, dopamine, and serotonin.