The bull-riding celebrity fitness trainer married to Sean “Diddy” Combs’ main accuser showed up at Manhattan court Monday to support his wife — who is set to give explosive testimony against the rap mogul.

Alex Fine, 32 — a gym trainer to the stars who rides bulls in his spare time — married 38-year-old R&B singer Cassie Ventura, who is known by her first name, in 2019, the year after she confirmed she had broken up with Combs.

Fine was Combs’ personal trainer and met Ventura at the gym.

The fitness-business owner — whose clients have included football stars Odell Beckham Jr. and Saquon Barkley and actors such as Jennifer Aniston — appeared grim-faced, wearing dark black sunglasses and a black t-shirt and black pants, as he arrived at the courthouse in the afternoon.

His wife — who is eight months pregnant with the couple’s third child — is expected to take the stand as early as Monday afternoon against Combs.

The “Me & U’’ singer was allegedly sexually and physically abused by Combs, 55 — with horrific new allegations surfacing during opening statements Monday.

In one instance, Combs made a male escort urinate in Ventura’s mouth during one of his infamous “freak-off’’ sex orgies, prosecutors said.

“Cassie will tell you that she felt like she was choking when Combs made an escort urinate in her mouth,” prosecutor Emily Johnson told the jury.

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Combs was also caught on camera viciously beating Ventura in a Los Angeles hotel hallway in 2016.
Jurors saw the chilling video Monday.

“Men who hit women aren’t men,’’ Fine wrote on Instagram in May 2024. “Men who enable it and protect those people aren’t men.

“Our daughters, sisters, mothers, and wives should feel protected and loved. Men who hurt women hate women.”