Thus, a is a partner who has been cleansed of all Nutella-like qualities. He is the detox. The anti-Nutella.
A "Nutella boyfriend" would therefore be a that provides the emotional benefits of a male partner, delivered through the medium of hazelnut cocoa spread. This is absurd on its face, but in the logic of internet humor, it works.
The "Nutella Boyfriend" isn’t just about the snack; it’s a mood. It describes a style that is , much like the spread itself.