: "Jack and Frankie have split.
"They’ve had a couple of rows and have unfollowed each other on Instagram."
Just last month the couple filmed their first reality show – Ex In The City S2.
It is set to hit screens later this year and viewers were told to expect fireworks.
Essex pair Jack and Frankie - who claimed to have "insane chemistry" - had their relationship put to the test when they came face to face with their exes on the MTV show.
A source told The Sun: "Jack and Frankie signed up for ex in the city - and were both horrified when some surprise exes turned up.
"They're actually a really strong couple, so they made it through the show - but viewers should expect fireworks onscreen."
Jack found love with Frankie just weeks after his split from her Towie co-star Chloe Brockett.
But 26-year-old Frankie denied there was an "overlap" and told The Sun they rekindled their romance three years after their first fling.
Jack's other exes include Dani Dyer, Connie O'Hara and his Love Island co-stars Ellie Jones and Laura Anderson.
He met Dani on Love Island and they went on to win the 2018 series.
She is currently on holiday after relationship woes of her own.
Dani's boyfriend Sammy Kimmence has been jailed for three years after pleading guilty to conning two OAPs out of £34,000.
Sources say he lied to her about the gravity of his crimes and she is now reconsidering whether they have a future together.
The Sun has contacted Jack and Frankie's representatives for comment.
Towie's Demi Sims films sister Frankie snogging Jack Fincham as they become official couple