"Gigi and Zayn broke up after the incident with Yolanda. The two have been co-parenting but they are not together. They tried to make things work for their daughter, but it wasn’t working out," the source says.
On Thursday, a source told ET that a disagreement between Yolanda and Zayn "turned hostile."
"Yolanda is telling people around her that Zayn struck her. Yolanda is extremely upset and it has caused issues with Zayn and Gigi," the source shared. "Gigi was not there for the time of the incident, so she’s had to listen to both sides."
In a statement to ET, Zayn denied the allegation, stating, "I adamantly deny striking Yolanda Hadid and for the sake of my daughter I decline to give any further details and I hope that Yolanda will reconsider her false allegations and move towards healing these family issues in private."
Gigi's rep also released a statement to ET, saying, "Gigi is solely focused on the best for Khai. She asks for privacy during this time."
Following news of the breakup, Gigi's father, Mohamed Hadid, posted an encouraging message for his daughter. "I simply love you my daughter and I am so proud of you," he wrote.
The two have broken up twice in the past. Their first split happened in March 2018 after nearly two years together. However, just one month after publicly announcing their breakup, they were spotted kissing.
Their second split came in January 2019, with a source telling ET at the time that they indeed went their separate ways. By early 2020, Zayn and Gigi had once again rekindled their love. They welcomed their daughter in September of last year.