Are you saying he now admits fault? If not, then you will be on dodgy ground re an insurance claim.
They will see it like this:
You are passing parked cars and he has right of way.
There are no independent witnesses (will disregard your girlfriend).
You word versus his.
Claim will go against you and ruin next years premium.
My own case was this:
I was approaching a T-junction to turn right.
Guy turned right off the main road at speed, cutting the corner at 45 degrees and hit my front right corner.
No independent witnesses.
He verbally accepted fault at the scene, declined to write anything except his details and left.
He then claimed I had emerged from the junction without looking and hit him as he carefully turned in.
Insurers decided it was my fault....(you have no "say" - THEY decide).
Be careful....
This is a prime example of why I ALWAYS summon the police in cases like these - I have had three non-fault crashes down the years , each time with no witnesses at all , and each time I got the police to come out and take statements : that way the other party cannot change his story afterwards . Once they tried to fob me off saying I didn't need them due to no injuries , but I insisted I required an attendance because there were no witnesses and I was afraid the other driver might change his story - 10 minutes later , two cops on the scene .
In one case , which I mentioned recently on another thread , both the other driver and I were breathalysed as a matter of routine : the other driver failed and was arrested on the spot - 'slam , dunk ' as far as my insurance claim was concerned ! It hadn't even occurred to me that the other driver might have been drunk , but he was .
Going by the 'aggressive manner' of the OP's other driver , and the fact it was probably first day back at work after new year , perhaps he might have imbibed more than he ought to have the night before ? Sadly , we'll never know now .