What is kiss and tell meaning?

To kiss and tell means to reveal intimate or personal details about a romantic or sexual encounter with someone, usually in a way that is considered inappropriate or betraying. Essentially, it involves breaking trust between the two parties involved by divulging information that was meant to be kept private. The expression usually has a negative connotation and is often used to criticize people who share intimate details about their partners without respecting their boundaries of privacy. It can also refer to spreading gossip or rumors about someone's romantic life without their consent.