Did he like me or was he only nice?

I had to work on a group project with a guy from my university. We only met for about an hour to get things done. While we were talking, I noticed that he would look into my eyes and then glance at my lips. When it was time to leave, he came over to say something to me, and he looked into my eyes so deeply that it felt like time stopped. Since then, we've only chatted about university-related stuff and nothing else. Did he like me or he was only nice to me? I am way younger than him.

Did he like me or was he only nice?
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