"There were times on set where it reared its head and threatened to take hold," the Waterloo Road star has shared.
The remaining five couples will now battle it out next Sunday for a place in the final.
"I’ve never experienced anything this tough in my life..."
The former Hear'Say singer has been partnered with Graziano Di Prima on this year's series.
And Helen Skelton's Jive was surely one for the Strictly history books too – despite a small mistake.
For the second week in a row, the bottom two came as something of a shock to viewers.
"I’ve got all the posture and grace of a Quaver."
As Strictly heads into its landmark 20th series, these are the celebs rumoured to be getting their dancing shoes on.
But the Dancing On Ice star insisted she'd be "cheering the loudest" if the rest of the group reunited without her.
Hear'Say and Liberty X became huge stars thanks to the reality show, but what happened after the chart hits dried up?