I have to say yes.
About a year ago, I met a guy and exactly that happend. It went from 0 to 100% within a matter of minutes. We both fell in love so quickly it was scary. Even tough it was long distance, we tried to work it out together and we dated for 5 Month. But it all happend so quickly that we just ended up being overly attached and didnt have the time to get to know each other completly.
I think Love at first sight is something that is real. But most of the times, it makes everything even more complicated that it normally would be.