Can anybody say awesome?
The boys are no stranger to the 'female ballad' having already covered Taylor Swift and Carly Rae Jepsen during their time on the show - so Demi's hit would certainly suit their style.
We imagine George Shelley is also just a little bit pleased with the song choice - considering he has a bit fat crush on Demi, and all.
No word yet on what songs James, Jahmene and Chris have chosen to record as their potential winner's single - but rumours strongly suggest each act will have a different song this year - rather than both recording a version of the same tune, a la Little Mix and Marcus Collinswith Cannonball last time round.
What do make of this news? Watch this video of our recent interview with Union J while you mull it over.