Is he interested in me or not?

For months, he was glancing and staring at me from far away. He seems like shy guy. A week ago, we started to say hi and smile each other. This week, I took the initiative and had small talk. I also saw him in market and said hi. He asked how I am. I explained smt briefly he made some comments and then I asked how he is. He said only he is fine and there was silence, he looked at shelf. Then I said bye.

Is he interested in me or not?
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