Jono Castano and Simone Holtznagel head out with his ex-wife Amy and her man for double date

The friendly exes! Celebrity personal trainer Jono Castano and his model girlfriend Simone Holtznagel are dating his ex-wife Amy and her new partner on a double date in Sydney

Famed personal trainer Jono Castano split up with his influencer ex-Amy in 2021, but there is clearly no bad blood between them.

The 31-year-old Acero gym founder was all smiles when he arrived Wednesday night for a double date night with his new girlfriend Simone Holtznagel, Amy and her new partner Aaron Evans.

The quartet showed up in good spirits as they made their way to the trendy new Asian restaurant Luna Lu in Sydney’s Campbells Cove.

Jono, dressed in a black Hugo Boss sweater and matching track pants, stood arm in arm with Simone as they went inside for the meal.

Meanwhile, Australia’s Next Top Model star Simone looked typically stunning in a low-cut blazer paired with stylish suit trousers.

Jono Castano was all smiles when he was spotted arriving Wednesday night for a double date night with his new girlfriend Simone Holtznagel and Amy and her new partner Aaron Evans

The quartet appeared in good spirits as they were photographed heading to the trendy new Asian restaurant Luna Lu in Sydney's Campbells Cove.  Amy and Aaron in the picture

The quartet appeared in good spirits as they were photographed heading to the trendy new Asian restaurant Luna Lu in Sydney’s Campbells Cove. Amy and Aaron in the picture

The blonde beauty appeared cheerful and smiled at photographers.

Amy also looked chic in a black top that she teamed with a black jacket and Fendi pants, worth $1890.

Jono, dressed in a black Hugo Boss jumper and matching track pants, was arm in arm with Simone as they went inside for dinner

Jono, dressed in a black Hugo Boss jumper and matching track pants, was arm in arm with Simone as they went inside for dinner

Australia's Next Top Model star Simone wore a low-cut blazer that she paired with loose trousers

Australia’s Next Top Model star Simone wore a low-cut blazer that she paired with loose trousers

The blonde beauty appeared cheerful and smiled at the photographer

The blonde beauty appeared cheerful and smiled at the photographer

The brunette beauty was all dressed up for the outing, wearing a full face of makeup and having her long locks pulled out and expertly coiffed.

Elsewhere, pro football player Aaron, 28, opted for a pricey casual fit.

He paired his $2,231 NBA X Louis Vuitton jersey with $530 Palm Angel track pants.

Amy also looked classy in a black top that she paired with a black jacket and Fendi pants worth $1890

Amy also looked classy in a black top that she paired with a black jacket and Fendi pants worth $1890

The brunette beauty was over the moon for the outing, sporting a full face of make-up and had her long locks taken off and relaxed

The brunette beauty was over the moon for the outing, sporting a full face of make-up and had her long locks taken off and relaxed

He completed his look with a pair of matching green and white sneakers from Louis Vuitton, worth $1990.

Jono debuted in September with his new girlfriend Simone.

Their relationship became public knowledge after they were pictured kissing at Mimi’s, the celebrity hot spot owned by hospitality mogul Justin Hemmes, who is in a relationship with Simone’s sister Madeline.

Jono debuted in September with his new girlfriend Simone.  Their relationship became public knowledge after they were photographed kissing at Mimi's, the celebrity hot spot owned by hospitality mogul Justin Hemmes, who is in a relationship with Simone's sister Madeline

Jono debuted in September with his new girlfriend Simone. Their relationship became public knowledge after they were photographed kissing at Mimi’s, the celebrity hot spot owned by hospitality mogul Justin Hemmes, who is in a relationship with Simone’s sister Madeline

The Castanos parted ways in early 2021, but decided to keep up appearances before making an official announcement.

Although they are no longer together, they remain friends and continue to run their fitness empire together.

The estranged couple first met on MySpace 13 years ago before later meeting at a nightclub and falling in love.

Amy and ex-husband Jono (right) agreed on their relationship in 2021, but decided to keep up appearances before making an announcement

The Castanos parted ways in early 2021, but decided to keep up appearances before making an announcement