Will and Damon and Vaughn and yulian

I’m looking for dark romance recommendations with intense obsessive and possessive dynamics between two male leads, similar to Vaughn and Yulian from Hunt the Villain and Will and Damon from Devil’s Night series. I want strong, dominant, very “manly” characters with that all-consuming, can’t-let-go kind of obsession whether it’s best friends with a darker edge like Damon and Will, or a second-chance, mafia, or forbidden dynamic like Vaughn and Yulian. I’m especially interested in mafia heirs, morally grey characters, enemies-to-lovers, or second chances, as long as the relationship has that possessive, obsessive