The internet exploded on October 9, 2019, when Coleen Rooney accused Rebekah Vardy of selling stories about her.
Coleen said she had had her suspicions for years that someone was sharing stories with The S*n, and so laid a trap to try and catch the person out.
After blocking "everybody but one person" from viewing her Instagram stories, she said she concluded the source could only be the account of Rebekah, the wife of Leicester City and England striker Jamie Vardy.
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Coleen was quickly dubbed "Wagatha Christie" for her investigative skills, while Rebekah said she never speaks to journalists, and was "disgusted" by the claims.
Part of her response said: "I liked you a lot a Coleen and I'm so upset that you have chosen to do this, especially when I'm heavily pregnant."
The two women, who became friends through their footballer husbands, have been at loggerheads ever since.
The case was back in the High Court this week ahead of the full trial, expected later this year.
Here is everything that has happened since Coleen's tweet in October 2019.
Rebekah takes legal action
Eight months after the initial accusation Rebekah Vardy launched a £1m High Court lawsuit against Coleen.
Court records indicate Rebekah filed her claim on June 12, 2020.
According to the BBC, Coleen Rooney's legal team said in a statement: "It is disappointing that Mrs Vardy has chosen to issue court proceedings.
"Coleen feels that the time and money involved could be put to better use; her offer to meet face to face still stands.
"Mrs Vardy's decision to issue court proceedings does at least mean that Coleen's evidence can be made public when the time is right."
Judge rules in favour of Rebekah Vardy in first stage of libel case
On November 20, 2020, Mr Justice Warby ruled that Coleen Rooney's social media post "clearly identified" Rebekah Vardy as the guilty party.
The judge ruled in favour of Rebekah, then 38, after Coleen's explosive social media post was dissected in court.
In his ruling, Mr Justice Warby said Coleen's message was "a considered post, using wording composed with some care".
He said: "It would be clear to the ordinary reader from the outset that it was meant seriously, and intended to convey a message of some importance."
He also rejected Coleen's contention that she simply referred to Rebekah's Instagram account, rather than Rebekah herself
The judge ruled: "I certainly do not think that the ordinary reader would take that single word (account), albeit repeated, to indicate that Mrs Rooney remains in doubt about who the wrongdoer was."
He added: "There is nothing in these words, apart from the word 'account', that in any way suggests that the behaviour of which Mrs Rooney is complaining might have been carried out by anyone other than the account holder, Mrs Vardy."
Mr Justice Warby also ordered Coleen to pay Rebekah just under £23,000 in costs.
The pair were given until 8 February 2021 to make an attempt to mediate their case but failed to find a solution and declined to settle out of court.
Rebekah Vardy claims another partial victory
Parts of Coleen Rooney's defence in her libel battle against Rebekah Vardy were thrown out by a High Court judge in July 2021.
This includes Mrs Rooney's, claim that Mrs Vardy, 39, showed "publicity-seeking behaviour" when sitting behind her in someone else's seat at the 2016 Euros.
Mrs Justice Steyn found that even assuming the allegation was true, it would still not help Mrs Rooney's case.
The judge also tossed aside an allegation from Ms Rooney that Ms Vardy was engaged in leaking stories about the case itself to The S*n.
Justice Steyn did, however, say the allegedly close relationship between Ms Vardy and the newspaper - which is reviled on Merseyside - was “one of the building blocks” of Ms Rooney’s case.
She said: "I accept that an exceptionally close relationship between the claimant and the newspaper or journalists to whom the defendant's posts are alleged to have been disclosed is probative of the plea of truth, albeit on its own it would not take the defendant far."
She continued: "It can, at least, be said to be less likely that a person with no such relationship would regularly disclose private information about others to that newspaper or those journalists and, perhaps, less likely that the disclosure would, on its own, result in a published article."
The judge also refused to throw out other parts of Mrs Rooney's defence about Mrs Vardy's alleged close relationship with The S*n and its journalists, including how she interacted with some on social media and positive coverage she allegedly received for leaking stories.
Huge court costs
A preliminary hearing was held in August 2021 to deal with the timetable of the case and any disputes over the parties' legal costs.
During a previous hearing in March of the same year, Mrs Rooney's barrister John Samson asked the court to "reject the claimant's cost budget and ask them to review it because, in the words of my lay client, it is grotesque".
At the time, Mrs Vardy's barrister Sara Mansoori said Mrs Vardy's overall budget was "£897,000, the estimated costs of which are £465,842.
"This compares to Mrs Rooney's estimated costs in her cost budget of £402,312."
However, these estimated costs are likely to have changed after Mrs Vardy applied to have part of Mrs Rooney's defence thrown out.
Explosive messages read out as saga returns to High Court
The ongoing Wagatha battle returned to the High Court on February 8, 2022.
WhatsApp messages between Mrs Vardy and her agent Caroline Watt were presented to the court, in which the former allegedly referred to Ms Rooney as a “nasty b***” and “a c***”.
Mrs Vardy also told Ms Watt she "would love to leak those stories x".
Mrs Rooney's barrister, David Sherborne, said Ms Watt's phone "fell into the sea" shortly after the court ordered it to be searched.
He said: "(It was) most unfortunate because it was only a short time after the court ordered that the phone should be specifically searched."
What will happen next?
The hearing before Mrs Justice Steyn concluded on Wednesday, with judgment expected on Monday morning.
The trial is due to begin in early May but is likely to be delayed.
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