betray with a kiss

📖 general
Meaning
To betray someone or something very subtly, often under the guise of friendship, affection, or loyalty, reminiscent of Judas Iscariot's betrayal of Jesus.
Literal Meaning
To commit an act of treachery while giving a kiss.
Example
“He thought his business partner was loyal, but his partner betrayed him with a kiss by secretly leaking their confidential plans to a competitor.”