Ryan Giggs had “full-on” affairs with eight women behind his girlfriend's back, a court heard.
Kate Greville, 36, broke down in tears at times on Tuesday as she gave evidence from behind a screen, claiming that the former footballer had been cheating on her since their relationship began.
She alleged Giggs, 48, headbutted her after being confronted, describing it as a turning point: “All the other times he’d hurt me … this was different. He deliberately tried to hurt me."
Ms Greville also claimed that Giggs had kicked her out of hotel bedrooms naked, once in Dubai and then again in London.
Ms Greville told how she had planned to leave the ex-Manchester United star while he was away on managerial duty with Wales in the autumn of 2020 after discovering evidence of his infidelity on his iPad.
She told Manchester Crown Court: "The reality of what I had found on that iPad was way worse than I could imagine. Eight women he was having affairs with while he was with me. Full-on relationships.
"Constantly since 2014, right from the very beginning. It was all there on his iPad in black and white."
The ex-Wales manager is on trial at Manchester Crown Court accused of assaulting Kate Greville, 36, and subjecting her to controlling and coercive behaviour from August 2017 to November 2020.
Ms Greville, who cried a number of times while giving evidence from behind a screen, said she had bought a flat in secret and had been in talks with lawyers about custody of a dog she and Mr Giggs shared.
The plans, that had been in place for four weeks, were sped up after an argument between the two while out for dinner on November 1.
'Get my stuff, we're leaving now'
Ms Greville said she left Manchester’s Stock Exchange hotel, caught an Uber to the home the couple shared in Swinton, and told her younger sister Emma - who was house-sitting - to "get my stuff, we’re leaving now".
Upon arriving home, the Greville sisters began filling a car with belongings, only for Mr Giggs to arrive 10 to 15 minutes later.
The court was told Mr Giggs began removing items from the car, and Ms Greville hid his phone as a "bargaining" tool to negotiate her leaving the home.
There was then a tussle for the device, which ended up with Mr Giggs on top of her. As she screamed for her sister to help, Mr Giggs threw his arm back towards Emma, the court was told.
Ms Greville claimed that Mr Giggs took possession of the handset, and pushed her head against the floor as he stood up.
Mr Giggs is then said to have walked to a neighbour’s home and called the police, telling Ms Greville: "I'm going to tell them that you attacked me, that you’re a psycho, and you won’t leave."
Ms Greville told the court that she responded by saying: "I’m glad the police are coming because you attacked me and I’ll tell them exactly what happened."
'He looked me straight in the eyes and headbutted me'
She continued: "And that’s when he came towards me and headbutted me in my face. No warning whatsoever.
"He just came at me from nowhere and grabbed me by my shoulders and headbutted me in my lip, in my face.
"I was in shock. I fell backwards. My lip instantly swelled, I could feel it straight away, I put my hands over my mouth and I was really worried because I could taste the blood. I thought he’d split my lip.
"All the other times he’d hurt me… this was different. He deliberately tried to hurt me. He looked me straight in the eyes and headbutted me straight in the face."
The jury were told of one such argument that resulted in Mr Giggs allegedly kicking a naked Ms Greville out of bed at a London hotel and "throwing a laptop bag" at her head.
The court was also told that Mr Giggs would call Ms Greville "up to 50 times an hour" if she didn't respond to him.
He denies the allegations. The trial continues.