The identity of Post Malone‘s ex-fiancée has finally been revealed.

On Wednesday, April 16, the name of the “I Had Some Help” hitmaker’s former partner was shared in a custody filing for the pair’s 2½-year-old daughter.

According to legal documents filed in Los Angeles Superior Court and obtained by PEOPLE, his ex’s name is Hee Sung “Jamie” Park.

In the filing, Park requested primary physical custody of her and the 29-year-old rapper’s daughter, who was referred to only by her initials — DDP.

According to the court document, Park is seeking joint legal custody and is willing to give Post Malone, whose real name is Austin Post, visitation rights.

She is also asking that Malone cover her legal fees.

At the time, a rep for Malone did not immediately respond to PEOPLE’s request for comment.

While the full timeline of the ex-couple’s relationship remains unclear, Malone proposed to his longtime girlfriend during a trip to Las Vegas in 2021 — and initially, she said no. 

On the podcast Call Her Daddy, he said that he had lost “a significant amount of money” gambling and was “hammered.”

When Malone asked her if she wanted to marry him, she told him to ask her tomorrow. 

“I was like, ‘Hey, you wanna marry me?'” he told host Alex Cooper in 2023. “I got a ring and all this stuff. And she said ‘no.’ She’s like, ‘Ask me tomorrow’ and I was like, ‘Alright.’ And then I did and I was sober and it was nice.”

In May 2022, the “Sunflower” artist welcomed a daughter with his former fiancée, just weeks after he told PEOPLE they were expecting.

While he didn’t share an official birth announcement for his daughter, Malone revealed the news of his baby’s arrival on Howard Stern in June 2022.

 In September 2023, Malone also discussed the decision to maintain privacy when it came to his daughter and his former fiancée.

“I feel like a lot of people feel entitled to know every single detail of everyone’s life and it’s why I don’t want to post any pictures of my baby, because I want her to be able to make that decision whenever she wants to and is ready,” he told CR Fashion Book for the Muses issue.

Never miss a story — sign up for PEOPLE’s free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories.