More on romantic love study
You may have heard about the fMRI study about early-stage, intense romantic love. I recommend checking out this short CogNews excerpt from LiveScience article about it.
Arthur Aron, Helen Fisher, Debra J. Mashek, Greg Strong, Haifang Li, and Lucy L. Brown. Reward, Motivation, and Emotion Systems Associated With Early-Stage Intense Romantic Love. J Neurophysiol 94: 327-337, 2005. First published doi:10.1152/jn.00838.2004