ˌkiss-and-ˈtell noun [countable usually singular]
a story, article, book etc in which someone tells the public the secret details of a romantic relationship that they had with a famous person

[TahlilGaran] Dictionary of Contemporary English ▲

kiss and tell
to publicly discuss private information about someone you know well.
She doesn't kiss and tell, not even in her new memoir.

Usage notes: often said about published information about someone famous

[TahlilGaran] English Idioms Dictionary ▲

kiss-and-tell
kiss and tell - to talk on television, in a newspaper etc. about a sexual relationship you have had with a famous person, especially in order to get a lot of money.
Her kiss-and-tell revelations scandalized Hollywood.
(always before noun)

[TahlilGaran] English Idioms Dictionary ▲

kiss and tell
participate in something private and then tell others about it
I don't trust her because she is the kind of person who will kiss and tell.

[TahlilGaran] English Idioms Dictionary ▲