From Longman Dictionary of Contemporary Englishheart-to-heartˌheart-to-ˈheart noun [countable] TALK TO somebodya conversation in which two people say honestly and sincerely what they really feel about something Why don’t you have a heart-to-heart with him and sort out your problems? —heart-to-heart adjective a heart-to-heart talk
Examples from the Corpus
heart-to-heart• But he's also honest, which means that during a heart-to-heart, your heart might get hurt.• It was time for a heart-to-heart with my daughter. 