From one of my abuse forums on Facebook about the trauma bond:

"Trauma bonding is the physiological response to emotional abuse. It makes it so that your body physically is withdrawing from the person on top of the emotional injury. Without the abuser your body secretes cortisol when they forgive you and give you affection you secrete oxytocin, dopamine etc. Sex hormones. Feel good. Which makes the abuser the fix you feel so desperate to get. The abuser will allow you to become so desperate that by the time they come back you’ll accept any behaviour. That’s why things don’t ever get better.

That’s what we get stuck in the cycle and it makes one feel crazy."