Begins with writers on love (5)
I believe the answer is:
opens
'begins' is the definition.
(opening is a kind of begining)
'writers on love' is the wordplay.
'writers' becomes 'pens' (I've seen this before).
'on' says to put letters next to each other.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'pens' after 'o' is 'OPENS'.
'with' acts as a link.
(Other definitions for opens that I've seen before include "Tournaments for both professionals and amateurs" , "expands" , "releases" , "Launches" , "Unlocks" .)