This is one thing I am not, though I was accused of it many years ago, and it ended a friendship.
I was told in confidence a certain thing which I have never shared with anyone, not even Hubby, even though he did not know this individual.
Redundancies were threatened at the company I worked for, and this person was the only casualty. She blamed me, saying I had snitched to management about the thing she’d confided to me all those years before. I denied it, but she didn’t believe me. I told her to think about who else, close to home, knew about it.
The penny dropped, but I didn’t get an apology.