He's still too young to get married.
He's far too young to get married.
What's the difference between these two sentences? I know that "far" is "very much", but I want to understand the meaning correctly. When is it commonly used in this context? For example, the first sentence is used, when "he" is 16-17 years old, but the second one is used, when "he" is 10-15 years old. Am I right?