The singer has been spending a lot of time with Matt, 32, as they gear up for their first BBC Radio One show together to air tomorrow.
And now the Strictly Come Dancing star has heaped praise on the presenter and admitted he is the “best person” to work with.
Discussing her new upcoming venture, she revealed to The Sun: “I’ve got Matt with me, I’ve got the best person to possibly be going in with.
“I am nervous, of course, but I can’t wait to get started.”
The 30-year-old also revealed she is stepping away from the music industry after catapulting into the limelight with girl group The Saturdays.
She added to the publication: ”At the moment I’m doing a lot of TV and radio.
“So I’m putting the music on hold for a minute, but there’s lots of exciting things coming.”
Mollie looked sensational as she partied the night away at the BRITs earlier this week.
The What About Us chart-topper squeezed her slender curves into a raunchy, leather dress which allowed the stunner to flash her toned pins.
She appeared to have the best time ever as she drunk Ciroc vodka with her BBC Radio One co-host Matt.
Mollie attended the event without her former Strictly Come Dancing partner AJ Pritchard who was just miles away at a bash held to honour Sir Bruce Forsyth.
Just days ago, the professional dancer spilled all on his rumoured romance with the blonde beauty.
The pair developed a close bond on the show which resulted in speculation whether they were dating.
However, the dancer has now set the record straight and revealed he is simply “great friends” with his co-star.
When asked whether he is more than pals with the singer, he spilled to OK! Magazine: “It was always just a laugh. We’re just great friends for life.
“That’s all it was and that’s what it will always been.”
But AJ, 23, did admit performing with Mollie every night was the “best feeling in the world”.
The full interview with AJ Pritchard can be found in the latest issue of OK! Magazine, which is out now.
Strictly Come Dancing returns to BBC One later this year.