(someone's) secret is safe with (one)(redirected from his secret is safe with me)
(someone's) secret is safe with (one)
One will not divulge the secret that someone else has shared with one. A: "Please don't share that information with anyone else!" B: "Don't worry—your secret is safe with me!" The legal consultant assured me that our secrets are safe with him.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Your secret is safe with me.
I will not tell your secret to anyone. Don't worry. I won't tell. Your secret's safe with me. Your secret is safe with me. I will carry it to my grave.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.