Was he trying to see if it was me?

So a few days ago I saw my former crush after 15 years he noticed me when he looked at me at the store we were at cause he looked a little longer than most men would which is usually a glance. I didn't think I would see at all in my life and I did. I feel he was looking at me and smiling softly at me just to see how I would react but I was also with my husband and kids.
Was he trying to see if it was me?
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