The former TOWIE star posted an adorable snap with her rumoured boyfriend which shows them cuddling up, captioning the photo with: “Sunday snuggles”.
The snap was posted just days after Louis, 25, was shown winning the Strictly Come Dancing Christmas special, which was broadcast on Christmas Day.
Louis and fitness guru Lucy, 23, met whilst filming BBC gymnastics show Tumble earlier this year.
A source told The Sun: “There were lots of rumours about Louis and Lucy when he was judging Tumble and she was a contestant. It’s true they were flirting but nothing happened.”
According to reports, Lucy was put off dating Louis due to his height.
But the source added: “Louis got with someone straight after Tumble but they split and he bumped into Lucy. She must have forgotten about his size because sparks flew and they started dating.
“The way things are looking they could be together for a long time.”