Reunited with my childhood crush, thoughts?

I recently reunited with my childhood crush at an event. We both knew we liked each other as kids. I hadn't seen him in nearly 10 years because I moved cities. I don't have any feelings for him anymore, but I was still nervous to see him after so long.

I was sitting across from him at a table, and noticed he couldn't keep eye contact with me, seemed very shy, and was blushing when I spoke to other people on our table. He didn't say a word to me the whole time. When we left the event, I was standing with a group of people he also knew, but he was staring at me, smiled and waved goodbye without looking at anyone else. I found this whole interaction quite strange, any ideas what was going on in his mind? Do guys still think about their childhood crushes often?

Reunited with my childhood crush, thoughts?
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