I Fear That I Read Too Many Novels During an Impressionable Youth

I really wish that I didn't talk like someone out of an Austen novel when I get nervous. Who, I ask you, says 'if that would be amenable' when asking someone out? And then follows by saying 'I have so enjoyed your company this past week'? It's as well to be polite but it has to be said that this borders on the absurd. I know I'm laughing (nicely) at myself right now. Yikes.