Bettany says that Vision "exists for Wanda" and "they're like a unicorn relationship" in that they complete each other by meeting "at exactly the best bits of each other."
Olsen told Rotten Tomatoes that "they're literally soulmates," adding that they have "such an innocent expression of love between the two of them" with Wanda being highly empathetic and Vision being a highly rational thinker. She also explained that because they both have a piece of the Mind Stone, they are physically bonded.