I'm one of those women who will tell a guy, "Sorry but I'm not interested.." and if he presses onward... I will say "No."
So it's a mystery to me why other women want to string a guy along.
Can't go wrong with a polite and concise answer. The guy isn't left to wonder and make a fool out of himself via false hope.... and the woman doesn't have to be pestered by an eager guy.
"The weakest soul, knowing its own weakness, and believing this truth that strength can only be developed by effort and practice, will, thus believing, at once begin to exert itself, and, adding effort to effort, patience to patience, and strength to strength, will never cease to develop, and will at last grow divinely strong."
- James Allen