with Stedman Graham

A viewer to the pair's YouTube advice show, 'The OG Chronicles', asked for help after revealing she'd secretly been swapping flirty messages with her sister's ex-boyfriend, prompting the pals to remember a conversation they had had many years ago.

Oprah, 65, said: "This is interesting. Years ago, I think I'd been dating Stedman... I don't know. I've been dating him since 1775. So we've been together a long time.

"But early on in our relationship, I was doing these shows [like] 'My sister slept with my sister's husband' or 'my sister slept with my boyfriend,' and all that. And Gayle said..."

Gayle interrupted: "If you ever catch me and Stedman, you know, boinking around, fooling around, you catch us in bed.

"[Oprah] shouldn't even be mad at me, because she should say I've lost my mind. Take me to the hospital. You shouldn't even be upset."

Oprah continued: "[Gayle] goes, 'Call someone. Put me in the jackets and have me carried off because you will know that I have lost my mind."

Her pal agreed: "Lost my mind."

But the 64-year-old journalist insisted that even if the unthinkable had happened, she shouldn't just be the one to blame.

She said: "You should be mad at him."

Oprah recently admitted she learned how to be a good friend from Gayle.

She said: "If I am your friend never a hint of jealousy. And the same thing with my friend Gayle. I've actually modelled being a friend after the friend that Gayle has been to me.

"I want to be the same friend to everyone that [Gayle's] been to me so that no matter what happens to you so and even if I ain't got no job and you got the best job, I am just so happy for you! I want my friends to soar ... the sky isn't even the limit."