What single person might want until now? (2,4)
I believe the answer is:
to date
'until now?' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for to date that I've seen before include "up to the present day" , "Amorous American's aim," , "Up to this time - check calendar" , "Reason suitor's come" , "Up until today" .)