How can i find someone without knowing their last name?

-I'm not stalking anyone, if that comes to mind. I just met this guy that I really like and was wondering if he had a Facebook so I could contact him. I know his first name, nationality, state and approximate age. No last name.

Any answers would be greatly appreciated.Unless he has a REALLY unusual first name, the answer is no, not on the Internet. Ask around among possible mutual friends and acquaintances. Post a looking for the "handsome blue-eyed blond I met at Jack's Bar" message on CraigsList. Do NOT post his personal information, such as his name, on the Web.
Chances are you won't be able to find this person --unless his first name is unusual, like Lubberdus or Hilko.
You can't