Crush at first sight is definitely possible, because a crush is nothing deep. Love develops with time so you can't possibly fall in love at first sight, at least in my opinion.
I don't believe in love in fist sight! I think you would need to know them better to really fall in love with them!
I personally do not believe in love at first sight.I think love, true love is something that takes time and doesn't occur when you first lay eyes someone.But yeah you could crush at first sight because a crush is just a crush.
I don't believe in love at first sight. I think you really have to take the time and get to to know the person first. Maybe after you hang out for a week or so, then you might be able to tell if he is really somebody you like,trust and care for.