Now Sam, 31, has jokingly admitted that he doesn't know if he'll "have a girlfriend at the end of it".
In an interview on Hits Radio, the former Made In Chelsea star revealed Zara, 26, will not be joining him on his latest adventure. Instead, he invited best friend Pete Wicks to be his plus one.
But their time apart as Sam competes in the show could have an impact on him and Zara, a source has told new.
"The comments about the relationship ending were tongue in cheek, but Sam thinks about what he says, and he'll want Zara to tell him everything's going to be okay," said the source. "Neither of them wants their relationship to end."
In the same chat, Sam said Pete offered to step back and let Zara take his place, but Sam told him, "No, I need you there."
He did explain it was only because he thought Zara would still be in the running for the Glitterball Trophy, but she was eliminated in Strictly's Halloween week.
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