"Well," Al murmured. "Technically, the future children of these two unions will only be classified as Weasleys in case of a premature divorce or marriage annulment. You know, annulment like ours." He shook his head and talked faster.
"But, regardless of the situation, they should be relatively safe from the second possibility, right? Especially considering that they can eventually produce Pureblood offspring to prove it."