Your profile shows 28 years old, so that means you've been out of high school for anywhere from 9 to 10 years thereabouts, right?
People change a lot once they leave school. The big bad world is somewhat of a harsh equalizer for most people. I wouldn't even think about it anymore. He's not the same person, and neither are you.
You're over analyzing the situation.
Just keep going and wing it. Put the past behind you.
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I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...