Holly Willoughby said she will leave This Morning if her co-host Phillip Schofield ever quits the show.
In a clip from Monday's upcoming episode of Shopping With Keith Lemon , Holly said she couldn't imagine fronting the show without her TV husband amid rumours of a feud circulating the pair.
Holly, 38, was quizzed by comedian Keith, 46, on the steps she would take in her career if Phil ever decided to leave the show.
She said: "If he left This Morning... well we've always said from the beginning that if either of us left then we wouldn't want to do it as I can't imagine This Morning without Phil, it's us together.
"I've been doing it for 10 years, it feels like forever. For a long time I felt like the new girl, I was a big fan of watching the show.
"Watching Phil and Ferne, they were my This Morning presenters. So when I say it feels like forever, it's because it's so nice."
She jokingly added: "I think we're getting too deep now and I want to get deeper but not in front of the escalator where I can hear it whilst I'm talking so let's go somewhere else."
Holly also said she has been a "big fan" since Phil presented the show with Fern Britton from 1999 until 2009.
It comes as , insisting he won't let them ruin Christmas after reports of a 'toxic' atmosphere behind the scenes at ITV.
But he has admitted the staff at This Morning were affected by the claims, revealing "they were like, 'what the hell?'."
It was claimed the telly star was incredibly jealous of his partner's success, including her stint on I'm A Celebrity... Get Me Out Of Here! last year.
But the presenter, 57, rubbished any claims of envy when he was grilled over any tensions bubbling away between the duo on the set of This Morning.
Instead, he said Holly was the sister he never had as he insisted their friendship was stronger than ever.
Speaking at the launch of Dancing On Ice, Phil told The Mail On Sunday : "Can you imagine a feud between us ever happening? It's not as if we have to defend anything.
"It's a shame… We are so open on the show, we are so open online and we go on holiday together. Holly is the sister I never had, we think at the same speed. It's so organic… it's a shame.
"Everyone who knows us, I mean, everyone at This Morning was like, 'What the hell?' The atmosphere in our studio is so wonderful, there's such a lovely team. Everyone is lovely."
ITV has previously dismissed rumours of a "toxic atmosphere" on This Morning as "malicious gossip", insisting there's no issue between Phillip and his co-host Holly.
A spokesperson for ITV said: “It’s deeply disappointing and unfair for Phillip to be the target of this sort of malicious gossip.
“Phillip is a much respected broadcaster and colleague and this is absolutely not a description of This Morning that we recognise.
“Holly and Phil are great friends both on and off screen and are popular among viewers and colleagues alike.”
