Despite both denying the allegations almost every day and Dan revealing he is back together with his wife, former EastEnders actor Jacqueline Jossa, Dan and Gabby's former housemate Natalie Nunn claimed that something would have happened between the pair if the cameras weren't on.
Clearly annoyed at her words, Dan's wife Jac has now broken her silence on the matter, admitting she doesn't think it's 'fair'.
Speaking to OK! Online, the mum-of-two said, "I hate that people I’ve never met have opinions abut my relationship."
She also revealed she actually spoke to Gabby before the Love Island star entered the house, "It was probably a bit awkward for Daniel and Gabby at the start because they would have been conscious of how things would look on camera. I spoke to Gabby before she went in the house and we’re cool with each other."
Dan wrote on Twitter at the time, 'Whenever a relationship goes through tough times etc.. why is it always the man that gets stick..? When in ‘public eye’, worst part is, the people trying to give me stick etc are people that DO NOT KNOW ME, do not know the situation.. so can please p--- off.... appreciated' sic
Jacqueline also wrote, 'No one needs to comment and get involved in things they don’t know anything about. Daniel and I are dealing with things privately as a team, there is always 2 sides to every story. Stop with the nasty comments, no one deserves them. Trust me ❤️ privacy please x'. sic
Dan, who found fame on TOWIE, was then at the birth of the couple's second daughter in June, with the proud dad sharing an adorable photo of Ella and Mia. He wrote, '2/3 of my ABSOLUTE WORLD!! ❤️ Welcome to the world Mia Osborne 💗 another little princess 😊 Jacqueline did amazing, she is doing fine and baby is perfect 😊 25.06.2018 🙌🏼❤️' sic
Meanwhile, despite a number of Celebrity Big Brother viewers slamming Dan for his 'inappropriate behaviour' towards Gabby, the dad-of-two has since opened up to his fellow housemate Sally Morgan about his marriage.
After Psychic Sally revealed she thinks Dan will have two more children, he said, "Hopefully we'll sort things out. I wouldn't have kids with any other woman."
Check out which former housemates found love in the CBB house:
Swipe through to see couples that found love on Celebrity Big Brother...
Jacqueline Jossa breaks her SILENCE on Dan Osborne and Gabby Allen accusations
2 of 11
Lee Ryan and Jasmine Waltz/Casey Bachelor
The 2014 series of CBB brought with it one of the cringiest love-triangles to date, between Blue singer Lee Ryan, Jasmine Waltz and Casey Bachelor.
Lee started off by getting to know Casey, before declaring his 'love' for Jasmine. But when the America model was evicted, Lee jumped back into bed with Casey (leaving viewers fuming).
CBB bosses then created MASSIVE drama when they put Jasmine back into the house, resulting in a huge argument between the pair.
Despite this, Lee and Jasmine started a relationship and even appeared on the front of a magazine, but things didn't last long when Jasmine accused him of 'cheating'.
Swipe through to see couples that found love on Celebrity Big Brother...
Stephanie Davis and Jeremy McConnell
Perhaps the most memorable CBB romance EVER!
Despite entering the house with a boyfriend (Sam Reece), Hollyoaks star Stephanie Davis took an instant liking to Jeremy McConnell, with the pair leaving the house as an official couple.
They endured one of the most on/off relationships in the showbiz land, before welcoming their son Caben-Albi George into the world in January 2017 (with Jez doing a paternity test on live TV).
Things later took a sour turn, with a number of legal proceedings between the pair. They have now split for good, with Stephanie set to return to Hollyoaks in the coming months.
Sarah Harding and Chad Johnson
Nobody saw a romance between former Girls Aloud star Sarah Harding and The Bachelorette's Chad Johnson coming in 2017.
But after Chad and Sarah racked up a cute friendship, things soon turned into a romance in the house, with the pair getting cosy on a number of occasions.
They remained together for a number of weeks after the show ended, but with Chad living in America and Sarah in the UK, things didn't work out.
Chantelle Houghton and Preston
Ordinary Boys singer Preston immediately fell for 'fake celebrity' Chantelle Houghton in 2006.
Just three months after leaving the CBB house, the pair announced their engagement, with the wedding taking place the following August.
However, in June 2007 (less than a year later) Chantelle and Preson got a divorce, but the pair have remained friends!
Stephen Bear and Chloe Khan
Despite dating Lillie Lexie Greg at the time, Bear didn't let that stop him getting cosy with Chloe Khan during the 2016 series, with their fellow housemates complaining at their raunchy behaviour.
Although Lillie entered the house to confront Bear, that didn't stop Chloe waiting for him when he left the house as champion.
Despite their whirlwind romance, things soon ended between the pair, with Bear now dating model Ellie O'Donnell.
Basshunter and Katia Ivanova
Katia actually had a boyfriend on the outside, but her head was turned when she met Basshunter, real name Jonas Erik Altberg.
Despite the pair enjoying some time together in the house, Katia ended things on the show, calling the DJ 'too clingy'.
Marnie Simpson and Lewis Bloor
Geordie Shore's Marnie Simpson and TOWIE's Lewis Bloor had an instant connection when they appeared on the 2016 series of CBB.
Things seemed to be going well for the couple when they left the house, with the pair even moving in together. But it all ended in tears when it was revealed that Lewis had cheated on Marnie twice!
Megan McKenna and Scotty T
Despite Stephanie and Jeremy's relationship taking up more or less the whole series in 2016, TOWIE's Megan McKenna and Geordie Shore's Scotty T also got VERY cosy.
The reality pair enjoyed a number of steamy kisses in the house, but things didn't go to plan on the outside, with Scotty T blaming distance as the reason for their split.
Kerry Katona and Lucien Laviscount
Another CBB romance NOBODY saw coming was between Kerry Katona and former Waterloo Road star Lucien Laviscount in 2011.
Kerry and Lucien seemed very loved-up in the house, sharing a number of cuddles and kisses, but things didn't work out due to their 11-year age difference on the outside world.
Edele Lynch and George Gilbey
After originally trying it on with The Hills star Stephanie Pratt, Gogglebox's George Gilbey ended up in a relationship with B*Witched singer Edele Lynch.
The pair even ended up going on a caravan holiday together, but things quickly ended and George now has a child with another woman.
Lee Ryan and Jasmine Waltz/Casey Bachelor
The 2014 series of CBB brought with it one of the cringiest love-triangles to date, between Blue singer Lee Ryan, Jasmine Waltz and Casey Bachelor.
Lee started off by getting to know Casey, before declaring his 'love' for Jasmine. But when the America model was evicted, Lee jumped back into bed with Casey (leaving viewers fuming).
CBB bosses then created MASSIVE drama when they put Jasmine back into the house, resulting in a huge argument between the pair.
Despite this, Lee and Jasmine started a relationship and even appeared on the front of a magazine, but things didn't last long when Jasmine accused him of 'cheating'.
Swipe through to see couples that found love on Celebrity Big Brother...
Stephanie Davis and Jeremy McConnell
Perhaps the most memorable CBB romance EVER!
Despite entering the house with a boyfriend (Sam Reece), Hollyoaks star Stephanie Davis took an instant liking to Jeremy McConnell, with the pair leaving the house as an official couple.
They endured one of the most on/off relationships in the showbiz land, before welcoming their son Caben-Albi George into the world in January 2017 (with Jez doing a paternity test on live TV).
Things later took a sour turn, with a number of legal proceedings between the pair. They have now split for good, with Stephanie set to return to Hollyoaks in the coming months.
Sarah Harding and Chad Johnson
Nobody saw a romance between former Girls Aloud star Sarah Harding and The Bachelorette's Chad Johnson coming in 2017.
But after Chad and Sarah racked up a cute friendship, things soon turned into a romance in the house, with the pair getting cosy on a number of occasions.
They remained together for a number of weeks after the show ended, but with Chad living in America and Sarah in the UK, things didn't work out.
Chantelle Houghton and Preston
Ordinary Boys singer Preston immediately fell for 'fake celebrity' Chantelle Houghton in 2006.
Just three months after leaving the CBB house, the pair announced their engagement, with the wedding taking place the following August.
However, in June 2007 (less than a year later) Chantelle and Preson got a divorce, but the pair have remained friends!
Stephen Bear and Chloe Khan
Despite dating Lillie Lexie Greg at the time, Bear didn't let that stop him getting cosy with Chloe Khan during the 2016 series, with their fellow housemates complaining at their raunchy behaviour.
Although Lillie entered the house to confront Bear, that didn't stop Chloe waiting for him when he left the house as champion.
Despite their whirlwind romance, things soon ended between the pair, with Bear now dating model Ellie O'Donnell.
Basshunter and Katia Ivanova
Katia actually had a boyfriend on the outside, but her head was turned when she met Basshunter, real name Jonas Erik Altberg.
Despite the pair enjoying some time together in the house, Katia ended things on the show, calling the DJ 'too clingy'.
Marnie Simpson and Lewis Bloor
Geordie Shore's Marnie Simpson and TOWIE's Lewis Bloor had an instant connection when they appeared on the 2016 series of CBB.
Things seemed to be going well for the couple when they left the house, with the pair even moving in together. But it all ended in tears when it was revealed that Lewis had cheated on Marnie twice!
Megan McKenna and Scotty T
Despite Stephanie and Jeremy's relationship taking up more or less the whole series in 2016, TOWIE's Megan McKenna and Geordie Shore's Scotty T also got VERY cosy.
The reality pair enjoyed a number of steamy kisses in the house, but things didn't go to plan on the outside, with Scotty T blaming distance as the reason for their split.
Kerry Katona and Lucien Laviscount
Another CBB romance NOBODY saw coming was between Kerry Katona and former Waterloo Road star Lucien Laviscount in 2011.
Kerry and Lucien seemed very loved-up in the house, sharing a number of cuddles and kisses, but things didn't work out due to their 11-year age difference on the outside world.
Edele Lynch and George Gilbey
After originally trying it on with The Hills star Stephanie Pratt, Gogglebox's George Gilbey ended up in a relationship with B*Witched singer Edele Lynch.
The pair even ended up going on a caravan holiday together, but things quickly ended and George now has a child with another woman.
Lee Ryan and Jasmine Waltz/Casey Bachelor
The 2014 series of CBB brought with it one of the cringiest love-triangles to date, between Blue singer Lee Ryan, Jasmine Waltz and Casey Bachelor.
Lee started off by getting to know Casey, before declaring his 'love' for Jasmine. But when the America model was evicted, Lee jumped back into bed with Casey (leaving viewers fuming).
CBB bosses then created MASSIVE drama when they put Jasmine back into the house, resulting in a huge argument between the pair.
Despite this, Lee and Jasmine started a relationship and even appeared on the front of a magazine, but things didn't last long when Jasmine accused him of 'cheating'.
Celebrity Big Brother continues on Channel 5 tonight, when one more housemate will be evicted.
