[Republican Wildcat]

And didn’t he later provide the key vote to legalize homo marriage?

Nope.

[ealgeone]

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.

*****

He didn't help.

This case paved the way for future cases.