Definitely. Been there.
I caution people, though, to get to know the person before you decide to spend the rest of your life together. Go on a trip together as soon as possible. If you don't hate each other by the end of the trip, it may be a good relationship.
Why we fall in love on sight may be because of some kind of perception we have of a person. Often it's just looks, but it is often about what kinds of clothes they are wearing and the attitude they seem to present. We can be fooled though and even if you enjoy a great night in the sack together... or a whole bunch of great nights, you really need to get to know a person and their moral values, and how they react in different situations. Sex is great but will not make a relationship endure. We all get older.