He knows you're interested in the job, the question in his mind is whether or not he's interested in you. The only time I ever walked into a job cold was 1971, things have changed. I was asked questions across a variety of topics and all I did was answer and carry my side of the conversation. I made eye contact and answered the questions honestly -- this is my opinion and I don't care if you don't like it.

I get the impression from your posts here that you lack self confidence/self esteem and it's probably apparent in interviews. If you don't like you, why should they hire you?