Did he ignore me or didn't recognize me?

I saw my first boyfriend. I was 14, he was 17. Its been 15 years. He acted like he didn't know me. Would you forget something like that? Or is that just a normal response after all these years? I dont look like i did in high school so maybe he really didn't recognize me. I nearly had a panic attack.
Did he ignore me or didn't recognize me?
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