When is it safe to go back to a violent partner?

Although research shows that male veterans with PTSD are 2 to 3 times more likely to engage in intimate partner violence than veterans without PTSD, PTSD and domestic violence are separate issues when it comes to treatment.  Treatment for PTSD does not address domestic violence issues, so unless your ex is actively involved in undergoing a domestic violence program, the fact that he is taking meds for his PTSD and that he is “feeling better” are no indication that he is able to behave differently toward you.

A question you may wish to ask yourself is why you are considering returning to a relationship with a man who was so violent toward you?  It is a complex issue but on average women return 7 times to a violent relationship before they leave permanently (or are killed), and the reasons range from experiencing or being present during domestic violence as a child to a simple case of low self-esteem – not valuing herself enough to keep herself safe.  The woman remembers the good times (“he is a great guy”) and somehow dismisses the bad (“but he nearly put me in hospital”), then is shocked to realise she is back in the same old routine, repeating the cycle of violence.

This is how the cycle of violence works: There is a period of build-up when tension increases, leading to the stand over phase (where you find yourself “walking on eggshells”) and then, the explosion, where the violence takes place.  The remorse phase follows, then the pursuit phase, a feature of which is promises to never be violent again, and the victim feels relief that the violence has ended.  Then comes the honeymoon phase with both people in the relationship in denial as to how bad the abuse and violence was, and the possibility that violence could occur again is ignored, because they don’t want the relationship to end.  Unfortunately this does not last, and the build-up phase begins again.  This cycle escalates and becomes more frequent over time.

You don’t mention children – if there are children involved, they are learning that disagreements are managed by someone acting stronger and louder and exerting authority and control over another to get their own way.  

Finally, about your statement that “I don’t think that the violence is really his fault” – if you blame your ex’s violence on his PTSD, you are saying that he can’t control himself and that he isn’t responsible or accountable for his behaviour.   This excuse would never stand in a court of law and you shouldn’t be buying it either.  To answer your question “is it safe to give it another try with him” – it will only ever be safe when he is a safe person, and you need to see the evidence for that with your own eyes.  He will need to have completed a domestic violence program, addressed his alcohol problem and be showing the results.  Unfortunately, the only testing ground will be in his relationship with you, as most perpetrators of domestic violence are not violent outside of the home or toward people other than their partners.  If you value yourself and your life you will stay away.