The pair both returned to social media on Friday (5 February) after reports suggested their relationship had broken down.
They are said to have split over their future, with Lucy wanting to settle down, but Olympian Louis less ready to commit.
News of the pair's break up was revealed in The Sun. An insider told the paper: "Lucy and Louis wanted different things... In the end, Lucy wasn't prepared to wait."
They added: "Louis really had led Lucy on in that they'd discussed marriage and kids at length. It came like a bolt out of the blue and doesn't really make any sense to her."
At the time, neither commented publicly on the split, but just hours later Lucy shared a meaningful post on her official Instagram.
The former TOWIE star, 24, shared a picture of a quote reading: "Everything happens for a reason."
Fans were quick to console the fitness bunny, with one responding: "There's someone else out there. These things happen for a reason although it sucks at the time. Stay strong."
Twenty-six-year-old Louis, meanwhile, responded to a fan of Lucy's who'd told him didn't deserve the star.
The social media commentator wrote underneath one of Louis' Instagram pictures: "You don't deserve @lucymeck anyway she's beautiful and you both ovs wanted different things in life."
According to The Mirror, Louis replied saying: "Can't agree with you more on everything you've said."
Just weeks ago, the pair had seemed inseparable.
In January, the couple had enjoyed a trip to Thailand to celebrate their first anniversary together.
They first met while filming BBC1's Tumble in August 2014, but love didn't blossom for another few months.
The pair began dating on New Year's Eve 2014.
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