Somewhat interesting article on the brain

http://www.newsweek.com/id/158754

...love really is blind; romantic love turns down or shuts off activity in the reasoning part of the brain and the amygdala. In the context of passion, the brain's judgment and fear centers are on leave. Love also shuts down the centers necessary to mentalize or sustain a theory of mind. Lovers stop differentiating you from me.

via Andrew Sullivan