For those who don't know what the "seven minutes" theory is, search it up.
For Nico di Angelo, I think a lot of people would assume his seven minutes would be Will, or maybe even Hazel or Bianca which makes sense. But I present to you the belief that his seven minutes would not be with any of them, instead, with his mother, Maria. It would be filled with all the domestic moments between them; Maria bring him soup when he's sick, Maria teaching him how to cook one of his favorite dishes, Maria comforting him when he's sad, Little moments like that because Maria will always be his favorite person ever, even with Hazel, Bianca and Will. Thank you for your time.