Love is an addiction,” Fisher contends. “If you aren’t addicted to someone, you are probably not in love. The brain region that lights up when you are in love is the reward system, the brain system associated with wanting, seeking, craving, elation, focused attention, obsession, motivation and possessiveness. These are the same brain pathways that become active when you feel the rush of cocaine.” - See more at: http://www.match.com/magazine/article/11803/Is-It-Love-Or-Obsession/#sthash.SuVCHHNB.dpuf