Cheryl had even gone so far as to unfollow ‘Hardcore Harding’ on social media, hinting the mum-of-one was not friendly with the Celebrity Big Brother winner anymore.
But it appears things are on the mend between the two, after Sarah offered an olive branch to Chez on Twitter.
Cheryl asked her 6.4m Twitter fans about her music, hinting her return to the charts after giving birth to first son Bear with One Direction tomboy beau Liam Payne.
“Can you tweet me the songs from my album that you think should’ve been singles?”
Sarah Harding’s hottest pictures
And Sarah felt the need to tell Cheryl how much she loved her debut solo song, Fight For This Love.
Jumping on the exchange, she wrote back: “Hey stranger! U know FFTL will always be the one!” followed by a series of emojis and the hashtag #TrueToTheGame.”
With a steadily increasing stream of likes to Sarah’s post, Cheryl replied with the dancing woman emoji, followed by: “#alwaystrue”.
The exchange comes after Sarah claimed her and Cheryl has lost touch as they were both “busy” getting on with their lives.
When asked whether the pair fell out, Sarah told her CBB housemates: “It’s not for me to say.
“I don’t like talking about the other girls if it’s a permanent thing.
“We were like sisters, so of course it would never be plain sailing the whole time.”
Cheryl, along with fellow Girls Aloud star Nicola Roberts, resolutely stayed mute about Sarah during her time in the Big Bruv house.
While the pair appear to have made amends, the same can’t be said for Nicola and Sarah.
Cheryl’s sexiest pictures
After Sarah slammed fellow girl band Fifth Harmony as “slutty”, Nicola took to Instagram in what was considered an attack to her ex-bandmate by wearing a hat saying: “Women in music are dangerously underestimated”.
While Kimberley Walsh said she hoped “Sarah was okay” during her tumultuous time in the Borehamwood mansion, it was only Nadine Coyle who threw her full weight behind supporting Chad Johnson’s lover.
Tweeting while she was in the house, Nadine said: “Sarah is a very natural being. She swells on her feelings and acts on them.
“The support would mean the world to her.
“If I was there, no one would DARE utter a bad word about her.”
But even Nadine admits she “begged” Sarah not to go on the show.
With Cheryl and Sarah now talking, can we see a Girls Aloud reunion on the horizon?