What to say to a guy who asked you out?

If you are interested in going on a date with the guy who asked you out, respond politely by saying yes, smiling and asking where he would like to go. If you are not interested, be honest, thank him for his offer and tell him that you are not interested.

Cant wait to see you too either?

This is not correct. Dont use this phrase. The word too is not used in negative constructions.