Although the pair were at the bottom of the leaderboard, they were delighted with their scores and especially with an uncharacteristically nice comment from grumpy judge Craig Revel Horwood after their first dance, a Viennese Waltz.
The judges decided that Karim should make it through.
It may have been a risky decision for scores, but it certainly paid off with wife Rosie who loved the dance.
Ex-Emmerdale star Fletcher, 35, has wowed viewers and judges with his "sensual hip action" and for "oozing masculinity" on the BBC One competition. Thank you for being awesome'. "I have to choose the best dancer - Karim".
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The comedian added: "I am astounded and I've got to thank Karen, she is just incredible and is just wonderful and so patient it's insane!" I had sleepless nights within the build-up and there's no-one else who can have made it what it has been'.
The remaining three couples will take to the dancefloor for the Strictly Come Dancing grand final on Saturday December 14 on BBC One.
'You're an incredible household man who I like and you might be superior and I appreciated you actually from week one, not figuring out how one can stroll, and now you're a semi-finalist and you've got made all of us proud and have impressed all of us and I need to thanks for being superior'.
When Tesa asked Karen about Chris, she said: "This has been a giggle fest. You are an wonderful family man who I admire and you are awesome and I appreciated you literally from week one, not knowing how to walk, and now you are a semi finalist and you have made all of us proud and have inspired all of us and I want to thank you for being awesome". Thanks judges for being so superb to us.
But despite the BBC contest being known for the Strictly Curse, where many celebrities have got together with their dance partners during training, one woman who isn't anxious is Fletcher's wife Liz.