[CDBI] one to one relationship

What is the best way to define a one to one relationship in Class::DBI?

I have a table of queries where a user can do a basic search for 
services. Then, if they want more information on their search, they can 
fill in their details which populates a request. Nine times out of ten 
the user will not be requesting any more info so I have created two 
tables, "queries" and "requested_queries".

queries
-------------
| query_id  |
| search    |
| timestamp |
-------------

requested_queries
----------------------
| requested_query_id |
| query_id           |
| firstname          |
| surname            |
| email              |
----------------------

Now is there anyway in Class::DBI to setup a relationship whereby I 
could code the following (for an existing query that does not yet have a 
matching requested query)

$query->requested_query->create();
$query->requested_query->firstname('Joe');
$query->requested_query->surname('bloggs');
$query->requested_query->update();

I tried using "might_have", but this fails as both the "firstname" and 
"surname" are required fields. And as soon as I call 
"$query->firstname('joe');" it tries to run the insert statement without 
waiting for the "$query->update" call.

Cheers

-- 
Brett Gardner
Clientcomm
Phone : 02 9699 1888
Fax   : 02 9318 6499