Private, secret I broadcast about love (8)
I believe the answer is:
esoteric
'private' is the definition.
(associated in meaning)
'secret i broadcast about love' is the wordplay.
'broadcast' indicates an anagram (letters scattered or cast around).
'about' is an insertion indicator.
'love' becomes 'o' (love means zero in tennis).
'secret'+'i'='secreti'
'secreti' anagrammed gives 'esteric'.
'esteric' going around 'o' is 'ESOTERIC'.
(Other definitions for esoteric that I've seen before include "Secret, mysterious" , "Understandable by only an enlightened inner circle" , "Arcane -- coteries (anag)" , "unintelligible to outsiders" , "hidden" .)