India, April 11 -- There is a muchness to love that makes it one of the most exhilarating things a person can experience. In its first flush, it can have the effect of possessing us completely.

We may attempt to work, catch up on chores or hang out with friends, but all the while this knowledge that someone is in love with us hums deliciously, and distractingly, in the background.

The science of what happens to the brain on love is objectively wild. Dopamine levels shoot up, prompting feelings of euphoria and obsession. A neurochemical cocktail with markers not unlike those associated with addiction can make the urge to be with the person feel like a physical compulsion. For most of us, this eventually settles into steadier rhythms, tha...