AND NOW, just days after it was reported that Jenna had 'filed for divorce' from Channing, fans think they've found some definitive PROOF that the Magic Mike star is in fact dating the 'Price Tag' singer.
Posing for a photo with a fan backstage at a concert, fans were quick to notice a sign in the background, which appeared to have Jessie J's name on... leading fans to believe he was supporting his new girlfriend at one of her shows.
And as if this wasn't enough evidence, the fan who posed alongside Channing in the snap was quick to confirm he met the actor at a concert, replying to one comment with the words, 'yup, Jessie j concert'. sic
See which other celebrity couples we didn't see coming:
Swipe through to see all the surprising celebrity couples we never saw coming...
Fans think this photo is PROOF that Channing Tatum and Jessie J are DATING
2 of 17
Mary-Kate Olsen and Olivier Sarkozy
Olsen twin Mary-Kate married French banker Olivier Sarkozy in 2015, despite a 17-year age gap between the pair.
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Gabby Allen and Myles Stephenson
After her split from fellow Love Island star Marcel Somervillle, CBB star Gabby Allen announced she is now dating X Factor winner Myles Stephenson.
Prince Harry and Meghan Markle
Prince Harry and Suits actress Meghan Markle began dating in October 2016 and married in May 2018. Their first child is due in Spring 2019.
Channing Tatum and Jessie J
After splitting from his wife in early 2018, EVERYBODY was left in shock when reports suggested Channing Tatum is dating pop star Jessie J.
Selena Gomez and The Weeknd
Nobody saw a romance between singers Selena Gomez and The Weeknd coming! But they went strong until October 2017 when the pair reportedly split up.
Cheryl and Liam Payne
Cheryl and One Direction singer Liam Payne shocked the world when they announced they were dating back in February 2016. Despite a ten year age gap, the couple welcomed their first child, Bear Grey Payne, back in March 2017. However, in July 2018, Cheryl and Liam released a joint statement revealing they'd split.
Katy Perry and Russell Brand
Katy Perry and Russell Brand married in 2010, much to the surprise of fans. Their marriage was short-lived, leading to a divorce in 2012.
Taylor Swift and Tom Hiddleston
Taylor Swift and Tom Hiddleston were 2016's most talked about romance! Unfortunately, the couple went their separate ways a year later.
Rob Kardashian and Blac Chyna
Rob Kardashian started dating Blac Chyna in 2016, despite her previously dating Rob's sister's ex-boyfriend Tyga. They welcomed a baby girl together called Dream and later ended on very bad terms!
Vogue Williams and Spencer Matthews
Fans didn't expect Vogue Williams and Spencer Matthews to become a couple! The pair met when they were filming for Channel 4 show The Jump in 2017, got married in June 2018, and welcomed son Theodore in September 2018.
Sacha Baron Cohen and Isla Fisher
Sacha Baron Cohen and Isla Fisher married in 2010 after a six year engagement. Nobody saw this marriage coming with the unusual movie roles Sacha plays!
Stephanie Pratt and Jonny Mitchell
Love Island star Jonny Mitchell and Made In Chelsea's Stephanie Pratt left fans in shock when they confirmed their romance with this picture in September 2017. Sadly, the couple have split in December 2017.
Benji Madden and Cameron Diaz
Actress Cameron Diaz married Benji Madden just two months after she met him, despite many not seeing their romance coming.
Nicole Richie and Joel madden
After starring in TV show The Simple Life with her best friend Paris Hilton, Nicole Richie turned a lot of heads when she married Good Charlotte singer Joel Madden in 2010! They share children Harlow and Sparrow.
Chris Martin and Jennifer Lawrence
After his split from Gwyneth Paltrow, Coldplay singer Chris Martin was spotted getting cosy with The Hunger Games actress Jennifer Lawrence. Despite not actually confirming a romance, the pair reportedly called things off in 2016.
Sam and Aaron Taylor-Johnson
Fans of actor Aaron Johnson were left in shock when he married Fifty Shades Of Grey director Sam Taylor. Despite Sam being 24 years older than Aaron, the pair combined their surnames when they got married in 2012. They now have two daughters together, Wylda and Romy.
Mary-Kate Olsen and Olivier Sarkozy
Olsen twin Mary-Kate married French banker Olivier Sarkozy in 2015, despite a 17-year age gap between the pair.
Swipe through to see all the surprising celebrity couples we never saw coming...
Gabby Allen and Myles Stephenson
After her split from fellow Love Island star Marcel Somervillle, CBB star Gabby Allen announced she is now dating X Factor winner Myles Stephenson.
Prince Harry and Meghan Markle
Prince Harry and Suits actress Meghan Markle began dating in October 2016 and married in May 2018. Their first child is due in Spring 2019.
Channing Tatum and Jessie J
After splitting from his wife in early 2018, EVERYBODY was left in shock when reports suggested Channing Tatum is dating pop star Jessie J.
Selena Gomez and The Weeknd
Nobody saw a romance between singers Selena Gomez and The Weeknd coming! But they went strong until October 2017 when the pair reportedly split up.
Cheryl and Liam Payne
Cheryl and One Direction singer Liam Payne shocked the world when they announced they were dating back in February 2016. Despite a ten year age gap, the couple welcomed their first child, Bear Grey Payne, back in March 2017. However, in July 2018, Cheryl and Liam released a joint statement revealing they'd split.
Katy Perry and Russell Brand
Katy Perry and Russell Brand married in 2010, much to the surprise of fans. Their marriage was short-lived, leading to a divorce in 2012.
Taylor Swift and Tom Hiddleston
Taylor Swift and Tom Hiddleston were 2016's most talked about romance! Unfortunately, the couple went their separate ways a year later.
Rob Kardashian and Blac Chyna
Rob Kardashian started dating Blac Chyna in 2016, despite her previously dating Rob's sister's ex-boyfriend Tyga. They welcomed a baby girl together called Dream and later ended on very bad terms!
Vogue Williams and Spencer Matthews
Fans didn't expect Vogue Williams and Spencer Matthews to become a couple! The pair met when they were filming for Channel 4 show The Jump in 2017, got married in June 2018, and welcomed son Theodore in September 2018.
Sacha Baron Cohen and Isla Fisher
Sacha Baron Cohen and Isla Fisher married in 2010 after a six year engagement. Nobody saw this marriage coming with the unusual movie roles Sacha plays!
Stephanie Pratt and Jonny Mitchell
Love Island star Jonny Mitchell and Made In Chelsea's Stephanie Pratt left fans in shock when they confirmed their romance with this picture in September 2017. Sadly, the couple have split in December 2017.
Benji Madden and Cameron Diaz
Actress Cameron Diaz married Benji Madden just two months after she met him, despite many not seeing their romance coming.
Nicole Richie and Joel madden
After starring in TV show The Simple Life with her best friend Paris Hilton, Nicole Richie turned a lot of heads when she married Good Charlotte singer Joel Madden in 2010! They share children Harlow and Sparrow.
Chris Martin and Jennifer Lawrence
After his split from Gwyneth Paltrow, Coldplay singer Chris Martin was spotted getting cosy with The Hunger Games actress Jennifer Lawrence. Despite not actually confirming a romance, the pair reportedly called things off in 2016.
Sam and Aaron Taylor-Johnson
Fans of actor Aaron Johnson were left in shock when he married Fifty Shades Of Grey director Sam Taylor. Despite Sam being 24 years older than Aaron, the pair combined their surnames when they got married in 2012. They now have two daughters together, Wylda and Romy.
Mary-Kate Olsen and Olivier Sarkozy
Olsen twin Mary-Kate married French banker Olivier Sarkozy in 2015, despite a 17-year age gap between the pair.
According to American website The Blast, Jenna filed for divorce on Friday afternoon in Los Angeles, citing irreconcilable differences. The publication also revealed that Step Up star had requested joint legal and physical custody of their five-year-old daughter, Everly Elizabeth Maisell Tatum, and asked for her own name be restored to Dewan.
Meanwhile, reports that Channing and Jessie were dating first started earlier this month, with an insider telling US Weekly that the pair are "having fun together". Channing and Jessie have been spotted out and about together a number of times, in what the insider has described as a "new, casual" relationship.
