[Grammar] He has a best friend / He has the best friend

[englishhobby]

Coul you please tell me which article fits better here:

1) He has a best friend, Judy.
2) He has the best friend, Judy.
:?:

 

[ali7772016]

2) He has the best friend, Judy.

 

[Charlie Bernstein]

Both are right but mean different things.

He has a best friend, Judy =

- Some people have best friends. Some people don't. He does: Judy.

OR (if you're speaking TO Judy):

- Judy, you'll be interested in knowing that he has a best friend.

He has the best friend, Judy =

- He has a really terrific friend. It's Judy.

OR (if you're speaking TO Judy):

- Judy, you'll be interested in knowing that he has a really terrific friend.

 

[Tdol]

2) He has the best friend, Judy.

Please don't give out answers as fact when you are not sure of the correct answer.

 

[ali7772016]

Is it better to say:
He has a best friend, Judy.
or
He has a good friend, Judy.
And I know there should be more context.