Love at first sight

Do you think it’s possible to fall in love with a person at the very moment you see her? This is what is defined as arrow sight or love at first sight. Some people think that this only happens in movies, but it is real, because I know cases in which this fact has occurred. The other day I read an article on this subject, saying that according to a survey 45% of couples had experienced a crush. The truth is that I have never experienced it, I’ve been the kind of person who always thought that love comes after knowing the person, after several years of friendship and knowledge. Maybe some do not you share this view, but each is free to have a different view to me.
And I wonder: How can you fall in love with a person barely know? So easy, the attraction is very important in these cases, because you are attracted by another person. If your heart beats constantly and you have a knot in your stomach then you’re in love.