Oh, you teases you!
Earlier today, the former Xtra Factor co-hosts teamed up once again as they began working on a new project together.
And, clearly happy to be back together, Caroline and Olly couldn't resist a cheeky selfie.
Sharing the silly-faced snap to his Instagram, Olly said: "Quick catch up with Miss Twinkle toes @carolineflack1 this morning.... Wicked working together again."
While Caroline then shared the same photo to her own profile, along with the caption: "Back working with this lovely chap... will reveal all soon xxx."
Hmm, we wonder what it could be!
In the meantime, both Olly and Caroline have been busy with their own individual ventures of late.
Set to release his brand new album, Never Been Better, Olly has recently announced he is heading on tour in 2015. Performing 16 dates across the Ulk & Ireland, the 'Wrapped Up' singer has said he is "very excited" to be hitting the road.
Meanwhile, Caroline has been dancing up a storm on Strictly Come Dancing.
This weekend she joined her Strictly co-stars as they headed to Blackpool to dance live from Blackpool Tower's famous ballroom.
Performing the Jive with her dance partner Pasha Kovalev, Caroline impressed the judges with her fancy flicks and energetic routine.
While head judge Len Goodman told Caroline her performance was "class", Craig Revel Horwood said: "It was sharp, it was clean, I thought you executed that with military precision."
Bagging a score of 37, Caroline scored her first 10 in the competition and sailed through to next week.
During Sunday night's results show Judy Murray was the seventh celeb to leave Strictly and tweeting after the show, Caroline said: "Amazing weekend... sad to see @judmoo leave. But she's ACE and I love her. NEXT UP ...American Smooth ... cripes."
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Watch Caroline perform the Jive here: