Timeless (Taylors Version) (From the Vault) is about James and Regulus but it's also about Nick and Charlie and Percy and Annabeth but also Darcy and Tara.
It's also about Evelyn and Celia and Alex and Henry. It's about Wolfstar and Pip and Ravi
But it's not about Drarry or Mateo and Rufus. It's not about Ash and Poppy or Daisy and Billy. Because they are "maybe in another life" romances.