In 2013, Roberts wrote the 5–4 majority opinion that the appellants seeking to uphold Proposition 8 in California, which was ruled unconstitutional by lower courts, did not have standing and the lower courts' rulings were allowed to stand and same-sex marriages resumed in California.
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He didn't help.
This case paved the way for future cases.
Scalia joined him in that 5-4 decision.
It did not pave the way for the other completely separate cases. That had no bearing on the other cases being filed one way or the other.