From what you described you were a cash flow for her on the night. i hope you didnt pay her into the cinema or it backs my theory.

Best dates i ever had were the ones at the same place i just met them.

example one is a girl who came over to me as i played pool asking if id teach her. She paid for the table and the drinks all night. We had a dance together and even kiss closed and number exchanged for future meet. That meet never happened as it turned out she had a boyfriend but what a one night date to have.