Infatuation at first sight, yes. In some cases this will develop into true love.
I do believe, however, that sometimes we will meet someone and immediately there will be an awareness that somehow he or she will become important in our lives -- or we will become important in theirs.
But love, IMHO, has to be earned.
I'm enough of a romantic to believe in love at first sight - have interviewed too many people after decades of marriage who say it happened to them :)