After a breakup, while you logically might know the relationship is over, you body and brain is in a state of shock. It’s used to getting its feel good chemicals like dopamine and oxytocin from the relationship, and now that supply is cut off – and you feel like you’re in withdrawal.
You know the relationship was toxic, but for some reason, you can’t help but miss them, pine over them, and hope for them to change. Or, you might stay in a dead-end relationship because it hurts too much to leave.
When a relationship ends, the feelings harken all the way back to our lost childhoods when we were helpless, and dependent.