Be very humble when writing a note to the new lover (6)
I believe the answer is:
grovel
'be very humble when' is the definition.
I can't tell whether this definition defines the answer.
'a note to the new lover' is the wordplay.
'a note' becomes 'g' (musical note).
'to the new' indicates an anagram.
'lover' is an anagram of 'rovel'.
'g'+'rovel'='GROVEL'
'writing' is the link.
Can you help me to learn more?
(Other definitions for grovel that I've seen before include "Behave obsequiously, crawl" , "Crawl abjectly" , "Cringe in abject manner" , "Humble oneself in supplication" , "Behave obsequiously in fear or servitude" .)