[Kerry]

Caroline Flack and Olly Murs have revealed live on The Xtra Factor that Dermot O'Leary has become engaged to long-time girlfriend Dee Koppang.

The X Factor host's news was announced during a segment on the spinoff show tonight (November 19), in which O'Leary had to guess which famous movie scenes the X Factor contestants were re-enacting.

O'Leary refused to give his final answer in the quiz to prevent the presenting pair from having time to reveal the news. However, at the end of the segment, Flack shouted: "We want to congratulate you... on your engagement!", prompting a round of applause in the studio.

When asked by Murs why he had taken so long to propose to Koppang, who he has been dating for ten years, O'Leary quipped: "Well, you don't want to rush these things."

The couple reportedly bought a London home worth £3.5m together in April.

No wonder he's dancing

[Marc]

Even I'm gutted

[abcd]

i was absolutely stunned to learn lastnight that dermot has his own choreographer. I still cant get my head round it, i mean surely he makes that up on the spot?

[King Gizzard]

Bet she's delighted to get rid of that hideous surname

[fruit_cake]

Dermot and Dee

[King Gizzard]

Bit quirky. 8/10.

[Marc]

Dee and D

although his real name is like Sean.

She's pretty fit

[fruit_cake]

Originally Posted by Nathan

Bet she's delighted to get rid of that hideous surname

Dee and Koppang don't seem to go together very well, maybe Keira Koppang or something might have been better, or Karly Koppang perhaps

[Jords]

Congratz to them

[Visage]

Originally Posted by Nathan

Bet she's delighted to get rid of that hideous surname

Too right

[Callum]

Dee used to work as producer on Big Brother