I could do with some thoughts.
In the course of his business, he spends a lot of time skyping with people. I bring myself up to speed by reading back through the conversations (this is nothing unusual or covert!, they are business related and I need to know)
I am actually outraged to read him saying things like 'hello young girl, have you read X yet', or 'I know you're a busy young girl', or 'what do you think of x, young girl'.
It is wholly inappropriate and, frankly, makes him sound like a creepy old man.
he maintains that they are quite happy to be talked with like that 
I maintain it's unprofessional and patronising, over familiar and flirtatious and that it is an inappropriate way to talk.
And I've yet to read anything along the lines of 'hi there young boy, do you have that report yet...' No, that would be 'hi Bob, have you got that report yet...'
He thinks I am jealous
. I am not. I am annoyed that women are being talked down to like this.
Or am I over reacting?
His genuinely baffled and slightly amused reaction has pissed me right off.