What's this whole thing?

So I glanced over at this guy from across the room and we locked eyes with eachother for like 30 seconds, it felt intense, but I soon forgot about it. I only saw him an entire year later, and when I did, he saw me, froze in his tracks, and just stood there staring at me until I walked past. He then stood at a distance and locked eyes with me for like 30 seconds straight, this became a habit of ours and everytime I engaged in it, there's this really deep intense feeling that makes me anchored to it. It's been 5 years, and he still continues doing this and I can't seem to move on from it even tho I've dated other guys to forget about it.
What's this whole thing?
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