A friend was recently dumped by her long term partner. I was friends with both of them and always knew he had a sullen, critical side, but since the break up my friend has confided in me that he was physically abusive to her. His abuse wasn't cold and calculated, but he was very moody, used his moods to get his own way, and would be violent towards her when something triggered his anger.
He has now got together with another woman I'm friends with. How likely is he to do the same to her? Should I warn her, by letting her know how he treated my friend? Is it unfair on him if he doesn't get a chance for a fresh start?
(I have my friend's permission to share the information but she says it's my decision.)