Where is Love? In the Brain or the Heart?

Thanks to modern science, we know that love lives in the brain, not in the heart. But where in the brain is it -- and is it in the same place as sexual desire? A recent international study published in the Journal of Sexual Medicine is the first to draw an exact map of these intimately linked feelings.
They found that that two brain structures in particular, the insula and the striatum, are responsible for tracking the progression from sexual desire to love. The insula is a portion of the cerebral cortex folded deep within an area between the temporal lobe and the frontal lobe, while the striatum is located nearby, inside the forebrain.
Love and sexual desire activate different areas of the striatum. The area activated by sexual desire is usually activated by things that are inherently pleasurable, such as sex or food. The area activated by love is involved in the process of conditioning by which things paired with reward or pleasure are given inherent value. That is, as feelings of sexual desire develop into love, they are processed in a different place in the striatum.
According to Jim Pfaus, professor of psychology at Concordia University, member of the Center for Studies in Behavioral Neurobiology and a co-author of the study- "No one has ever put these two together to see the patterns of activation,"