The Xtra Factor host has laughed at rumours that Harry has asked her move in to a London flat with him.
'Oh. My .Lord! Ha ha,' Tweets Caroline, 32, in response to a 1D fan asking her if it's true they're shacking up.
One Direction singer Harry, 17, had reportedly asked Caroline to take their relationship to the next level to prove how serious he is about her.
But Now learnt recently that Harry's showing his love for Caroline in other ways - by showering her with gifts including a £1,500 Mulberry handbag.
'Harry's absolutely head over heels with Caroline,' a close source tells us.
'And he keeps telling her so.'