Channing Tatum and Jessie J have sparked speculation they're back together

A source told E! News: "They were both dressed down in sweats and trying to be low-key. No PDA [public display of affection] but both were in great moods and together the whole time while giving their opinions on different items."

Their reunion comes just two weeks after the 'Price Tag' hitmaker admitted she's been bombarded by a series of mixed emotions over the festive season.

Taking to her Instagram account, the 31-year-old singer wrote on her Stories: "Delayed emotions are.... well.... Not so fun (sic)."

Her cryptic post came just hours after it was reported that Channing had joined the elite dating app Raya in the hope of finding love with someone new in 2020.

A source said recently: "He's been on Raya for a few weeks. He would love to be dating someone and is not shy about it.

"He wants to have fun again and he doesn't care if he meets someone online, a set up or just walking down the street.

"A friend suggested Raya and he felt like he had nothing to lose by joining."

It's believed Channing and Jessie - who had been dating for just over a year - decided to go their separate ways because they were struggling to make their long-distance relationship work due to their globe-trotting careers.

An insider explained: "He [Channing] is super busy with his career, as a dad and will be travelling a lot in the coming months. He has a world awaiting him and is trying to manage how busy he is which isn't easy."

Channing, 39 - who is based in the US - balances his movie career with co-parenting his six-year-old daughter Everly with his ex-wife Jenna Dewan.