Does he fancy me?

Today when I was at my learning centre,I sat near a sir(we didn't know each other before),first we were lack of conversation and I even dared not to ask him questions,but after he explained some of the questions to me,we became having much conversation,and he talked with me just like a close friend,he even approached me when he was explaining the questions.The feeling to me is just different from other teachers. When i left the learning centre,he asked me what and where is my school and looking at me when I was leaving,so i just want to ask...does he fancy me?