Why he still follows me?

A guy was flirting with me but he was after casual hookups and I wanted something more serious so I made that very clear. At the end we ended up having nice conversations and then after a month of no contact I offered him to go out for drinks. He said he felt flattered but emotionally he's not ready and that I deserve someone who can give and receive more. He reassured that this is not about me, and I understood where he's coming from. But he still follows me on Instagram, still watches my stories or sometimes likes my post. I just find it weird since we have absolutely nothing connecting us now. Why is he still following me?
Why he still follows me?
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