Love in the first sight is a cumbersome phrase which is difficult to understand but yes one thing that I'm sure about is that there is something about the other person that you cant stop yourself from glancing at him/her or to put in other words there is something so eye catchy and appealing that you cant take your eyes off that person. And if that person is not around, your eyes are looking for him. Now what is appealing depends from person to person. You might get attracted to one's beautiful enchanting eyes or the cute smile. You never know what is it in a person that might steal your heart. Well, love is a term, which is much more than just physical attraction. It's about compatibility, understanding, trust and respect. At the end of the day, I would like to emphasize that 'love is a beautiful dream' so keep yourself open to receiving love then be it the case of love at first sight. :)