Hi... If he is suffering from anger management issues perhaps he needs Counselling. But if this is his preference which is rooted in his abusive childhood than there is no point in working upon it.
As therapists we can't suggest anyone to be or not to be in a relationship. We can only help them reach to their own decisions and make their own choices.
Next Steps
Consult a Psychologist.
Interpersonal Relationship Counselling is required.
Health Tips
Mr. Gunjan Maithil
Senior Psychologist
Cell: Nine Six Seven One Three Zero Three One Three Four (whatsapp)
Website:https://gunjanmaithil.wixsite.com/therapy
App: http://wix.to/fECHB08?ref=cl