Fatal attraction. What are the signs?

What are signs that a male teacher likes you? He is in his thirties. I am asking because this teacher is kinda creeping me out. I just want to be sure before I go making assumptions. What are signs of grooming?
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He always asks me if I am OK. One time I missed lunch and came in class late. He dropped what he was doing and got me some pizza from the teachers room. He told my best friend right in front of me that he likes me better than a lot of the other kids in his class. Also when he was assigning stuff to us he said I got number one. Because I was munber one in his heart. One time he was dressed like a farmer for school and my friend told him I said he looked like Mario. He changed his shirt at lunch.
Fatal attraction. What are the signs?
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