See more from Britain's Got Talent at http://itv.com/talent
Simon was smitten following Marc Métral and Miss Wendy's sensational audition.
Miss Wendy's feeling a bit catty during their semi-final performance, but will they claw it back?
SUBSCRIBE: http://bit.ly/BGTsub
Facebook: http://www.facebook.com/BGT
Twitter: http://twitter.com/BGT