Immediate attraction (love at first sight) real or not real?

So, I saw this randoam guy at my church's gathering and there was just some kind of energy that drew him to me. It wasn't strange and he wasn't intentionally luring, I honestly don't think he noticed me, but it's just that I got the feeling that I "had to get to know him" because something inside me told me that I'd regret it if I didn't...
...and then when I got the nerve to try to talk to him, someone pulled me into another conversation lol *sigh*
Oh well, maybe next time!
I know it's not 'love at first sight' but this is very intriguing as I've never experienced this before. 
Any tips or advice?

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