I don't know where you get the idea that he is a GENTLEMAN!!!
A gentleman will only give positive feedback.

He sounds to me like a useless prick who is jealous that you are able to branch out into a field that is beyond his ability.

Although I haven't heard you, from the scenario you describe, I wouldn't mind betting that you are a great storyteller.

Go with Bee's suggestion of a blank uncomprehending stare.