Should I just confront?

So this guy used to ignore me when he saw me at events, but recently at a wedding I noticed he stepped out of the queue to stare at me. Yesterday he casually glanced over when he heard someone talk, but when he noticed it was me he completely turned around and just stood there staring and smiling at me. I ignored this, but a couple of minutes later as I ate, he was staring again- it's awkward as he doesn't look away when caught and he wouldn't just come and talk.
Should I just confront?
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