When you break up from addictive relationships, you might experience extreme emotional and even physical withdrawal symptoms. Those are mainly because of the chemical changes in your body. During intimate moments in love, your brain releases endorphins and dopamine. After the breakup, your brain stops releasing them and you crave good feelings. If your body is used to alcohol or drugs, when you stop consuming them, you also feel withdrawal symptoms. This way withdrawal from substance addiction and breakups from addictive relationships feel similar.