Matt Cardle revealed to MTV that his steamy debut with Rihanna on the X Factor final nearly caused him to get an erection.

Talking about his duet with the statuesque superstar, who was dressed to kill in a seductive figure hugging dress, Cardle quipped: “I was actually thinking just don’t get an erection. I had very thin, very soft trousers on and I was like ‘please, please, please’. I was thinking “Margaret Thatcher, Margaret Thatcher.”

Matt Cardle: Career trumps sex

The revelation comes amid speculation that the X Factor victor might be kept off the number one spot in the charts by various internet campaigns.

2009 winner Joe McElderry’s song Climb was kept off the top spot by Facebook-fuelled single Killing In The Name by Rage Against The Machine.

At present Cardle’s single, a Biffy Clyro cover, When We Collide, is the bookies favourite to be Christmas number one but various campaigns threaten to knock it off course including a facebook campaign to get John Cage’s recording of silence into the charts under the name Cage Against The Machine.

But the most concerted Facebook campaign, with nearly 1,000,000 supporters, backs Surfin’ Bird for the number one spot.

Cardle himself seemed unconcerned by the competition

“If it doesn’t make it I’m not going to cry about it.”

“If people want to get something else to number one that’s fine… if it’s for charity whatever…you can’t stop people doing what they want to do.”