Love at first sight is usually a person who is in love in a
person who has good appearance. It might work out fine or work out
in a destructive way. I believe that what works out right in a
relationship is attitude. This is the most essential thing that
keeps a relationship going, even though good appearance plays a
part too. And yes, you will never know the result of it, unless you
make a first step to woo the lady. And i guess, from here you can
discover whether her character is what you are looking for,
together with her appearance. Even though it might be a sweeping
statement to say that, love at first sight can last for a very long
time. But who knows, it might happen.