One cited in divorce describes Romeo as pen pal, perhaps (13)
I believe the answer is:
correspondent
'pen pal perhaps' is the definition.
(pen pal is a kind of correspondent)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for correspondent that I've seen before include "Reporter on specialist areas" , "Reporter on special subject or from overseas" , "Person sending letters or written reports - agreeing" , "Journalist; letter writer" , "Pen-friend" .)