The phrase "inseparable pair" refers to two things or people that cannot be separated from each other. They are always together and cannot function or exist without each other. Full definition
While Astrid, Snoutlout and the rest of the gang are challenging each other to dragon races (the island's new favorite contact sport), the now inseparable pair journey through t... (fatmovieguy.com)
In How to Train Your Dragon 2, it's been five years since Hiccup and Toothless successfully united dragons and Vikings on the island of Berk, and the now inseparable pair journey through the skies, charting unmapped territories and exploring new... (collider.com)
Juan Cuadrado and his mum are so inseparable the pair even starred in a Colombian ad for tomato sauce together. (caughtoffside.com)