ive had that exact problem before.. but i got to know the guy and were going out atm. so take a chance and start getting to know him..even if yu guys dont start going out yu could end up with a really good friend :)
i think its just those initial first few months were everythings like that and then things calm down and its not the same and thats what makes yu feel that way but really if yu still think those things then yu are most probably not falling out of love with them.