[DarkMuse]

This is where I think you are wrong, because when the two individual molecules are put together, don't they just combine, and become a bigger "piece" of water?
But like I said,
Wetness isn't a property of a liquid, it is a property of an interface. Thus, water alone cannot be wet.

Oh definitely, if you believe that things cannot interface with themselves. Why can't dihydrogen monoxide interact with others of itself? Everything reacts to everything, that's just chemistry.