There is no such thing as love at first sight...
There may be admiration, affection or whatever else.
But love has to have strong foundations.
People often misuderstand the first feelings for a new person. When it happens to a single person(s), the relationship starts.
Unfortunately, it often occurs as a 'middle-age crisis'. A grown-up man thinks that he has found the 'true love', leaves wife in sorrow, kids in despair and fish in a tank
We have to separate love from being under sb's charm. The second one - can start at the fist sight.
I know. I've been there