Fisher and her team found that a region of the brain called the nucleus accumbens lights up when we see a picture of a person we’re in love with. It’s the same part of the brain that’s activated when a drug addict thinks about getting a hit. It’s also the region of the brain affected during a breakup. Our brain undergoes the same experience during a breakup and a drug withdrawal. It’s no wonder we want to keep getting high on our ex’s supply. Might as well face it: You’re addicted to love.