Why would he care what I think about him?

I have a crush on this guy. He knows I like him. I asked him if he wants to grab a bite to eat or go get coffee. He said he wanted it to be a casual hangout , not a date. He said he only sees me as a friend. A few months ago, I told him he looks nice with his hair down instead of spiked up. Ever since then, he has always kept it down. He hasn't spiked it up. Why would he care what I think about him, if he only sees me as a friend?

Why would he care what I think about him?
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