It was “intrigue” at first sight for me when I met the guy who would become my husband. I wouldn’t call it “love” because I didn’t know him as a person st that point. But attraction? Intrigue? Interest? Yes.
I was 15 and he was 17 when we met. We were friends for a while, then we dated during college. We got engaged during my senior year in college (he’d graduated by then and was working in his chosen field).
We’ve been married for 26 very happy years and have two daughters (19 and 16).
So yes, sometimes people just know. But take your time, people. Get to know someone before you marry them.