There have been no official photos of the new couple, but it's probably because Jessie is now on tour.
According to US Weekly, the Magic Mike actor and the Price Tag hitmaker have been dating for a few months.
When someone asked for more info on the date, he replied: "They were hella nice".
A source told the publication: "They've been hanging out a lot lately and he's excited about seeing her". Apparently Channing Tatum had been spotted at several of Jessie J's concerts in Seattle and Salt Lake City.
Channing Tatum seems to have moved on.
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'First off, it feels odd that we have to share this kind of thing with everyone, but it's a effect of the lives we've chosen to lead, which we also happen to be deeply grateful for.
Tatum and Dewan were together for almost 10 years and share 5-year-old daughter Everly.
'We have lovingly chosen to separate as a couple, ' it continued. We fell deeply in love so many years ago and have had a magical journey together.
'There are no secrets nor salacious events at the root of our decision - just two best-friends realising it's time to take some space and help each other live the most joyous, fulfilled lives as possible. They co-parent and have the same goals for their daughter, which is they want her to know that she is very loved'.
In what might be the most random couple you'll hear shacking up today, Jessie J and Channing Tatum are going steady. Channing and Jessie have both been in the entertainment industry for years and they actually shared a friendly hug at the 2015 MTV Movie Awards, where she and Mark Wahlberg presented him with the Best Comedic Performance award.