Massachusetts on Friday celebrates the 13th anniversary of the landmark ruling which legalized marriage equality in the commonwealth.

On November 18, 2003, Massachusetts became the first state in U.S. history to declare a state ban on gay and lesbian couples marrying unconstitutional.

Then-Governor Mitt Romney, a Republican and a possible candidate for secretary of state in the Trump administration, attempted to reverse and undermine the Supreme Judicial Court's ruling.

Marriage equality became the law of the land last year when the Supreme Court found that gay couples have a constitutional right to marry.

Mary Bonauto, civil rights project director at Gay & Lesbian Advocates & Defenders (GLAD), was the lead attorney in the lawsuit which struck down the prohibition in Massachusetts.

“With more same-sex marriages, you saw more people changing their minds,” Bonauto told the AP in 2013. “Seeing gay people with their extended families, seeing the commitment, that's what has turned this around.”

President-elect Donald Trump recently said that he's “fine” with the Supreme Court's ruling.

(Related: Jim Obergefell says he doesn't trust Trump on marriage equality.)