Yeah...run! I mean, having friends of the opposite gender while you're in a relationship should be totally fine for both. That's the base of a working relationship: being together but also being an own personality with an own life. BUT: getting violent and blaming the partner is one of the biggest red flags he could wave so get out there and have contact with people who at least communicate as if they were adults^^

I don't know whether there was anything untoward in that friendship ... but to be honest that is 100% irrelevant here, because there is ZERO justification for that outburst. If you feel safe doing so, it needs to be a conversation. Be clear that he needs to apologise and it NEVER happens again. If you don't feel safe having that conversation, you need to start making an exit plan. If he tries to justify his outburst without apologising, just walk.