Fulton County District Attorney Fani Willis arrives at a press conference with prosecutor Nathan Wade after a Grand Jury brought back indictments against former president Donald Trump and his allies in their attempt to overturn the state's 2020 election results, in Atlanta, Georgia, U.S. August 14, 2023. REUTERS/Elijah Nouvelage.
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Fulton County District Attorney Fani Willis arrives at a press conference with prosecutor Nathan Wade after a Grand Jury brought back indictments against former president Donald Trump and his allies in their attempt to overturn the state's 2020 election results, in Atlanta, Georgia, U.S. August 14, 2023. REUTERS/Elijah Nouvelage.

ATLANTA (AP) -- A former friend and co-worker of Fulton County District Attorney Fani Willis testified Thursday that Willis' personal relationship with a special prosecutor began before he was hired in the Georgia election interference case against Donald Trump.

WATCH LIVE: Judge considers whether to remove District Attorney Fani Willis from Georgia 2020 election case

Robin Yeartie's testimony directly contradicts statements from Willis and Wade that their personal relationship didn't begin until after Wade was hired in November 2021. Yeartie was called to testify in a hearing to determine whether Willis should be removed from the case accusing Trump and others of conspiring to overturn the 2020 presidential election results in Georgia.

Yeartie, who previously worked in the district attorney's office, testified that she saw Wade and Willis hugging and kissing prior to November 2021.

In a court filing earlier this month, Willis and Wade acknowledged a "personal relationship" but said it had not resulted in any direct or indirect financial benefit to the district attorney. In a sworn statement attached to the filing, Wade said the relationship began in 2022, after he was hired as special prosecutor, and that he and Willis shared travel expenses and never lived together.

READ MORE: Trump's New York hush-money case gets March trial date, judge rules

Willis' removal would be a stunning development in the most sprawling of the four criminal cases against Trump. An additional delay would likely lessen the chance that a trial would be held before the November election, when he is expected to be the Republican nominee for president.

Since the allegations of an inappropriate relationship surfaced last month in a motion filed by Trump co-defendant Michael Roman, the former president has used them to try to cast doubt on the legitimacy of Willis' case. Other Republicans have cited them in calling for investigations into Willis, a Democrat who's up for reelection this year.

At a separate hearing in New York on Thursday, a judge ruled that Trump's hush-money criminal case will go ahead as scheduled with jury selection starting on March 25.

Yeartie's testimony began after lengthy sparring between lawyers over who must answer questions in the hearing, which has the potential to dig into uncomfortable details of Willis and Wade's relationship.

Roman's lawyer, Ashleigh Merchant, has subpoenaed Willis, Wade, seven other employees of the district attorney's office and others, including Wade's former business partner, Terrence Bradley. Bradley took the witness stand earlier Thursday but refused to answer questions from Merchant, citing attorney-client privilege.

Roman, a former Trump campaign staffer and onetime White House aide, alleged that Willis and Wade had been involved in an improper romantic relationship that began before Wade was hired. The motion says Willis paid Wade large sums for his work and then benefited personally when he paid for vacations for the two of them, creating a conflict of interest.

Roman, who has since been joined by Trump and several other co-defendants, is asking McAfee to toss out the indictment and to prevent Willis, Wade and their offices from continuing to be involved in the case.

Willis argued she has no financial or personal conflict of interest that justifies removing her or her office from the case. Her filing called the allegations "salacious" and said they were designed to generate headlines.

McAfee said during a hearing Monday that Willis could be disqualified "if evidence is produced demonstrating an actual conflict or the appearance of one."

He said the issues he wants to explore at the hearing are "whether a relationship existed, whether that relationship was romantic or nonromantic in nature, when it formed and whether it continues." Those questions are only relevant, he said, "in combination with the question of the existence and extent of any personal benefit conveyed as a result of the relationship."