Jarrett Barrios, president of the Gay & Lesbian Alliance Against Defamation (GLAAD), announced Thursday that he's divorcing from Douglas Hattaway.

The two men were among the first gay couples to marry in Massachusetts when its state Supreme Court legalized the institution.

Barrios talked about his separation and impending divorce in an op-ed published in The Boston Globe.

“Nearly a year ago, I separated from my partner,” Barrios wrote. “At the time, we had been together for 16 years and married for over five. I felt I couldn't discuss it beyond my close circle of friends. Especially if you're gay and arguing that marriage should be open to you, divorce seems to be the ultimate failure.”

As a Massachusetts state senator, Barrios helped defeat a push by social conservatives to ban gay marriage in Massachusetts after the high court's 2003 ruling.

Hattaway is president and CEO of communications firm Hattaway Communications. He has served as spokesman for two Democratic presidential hopefuls, Al Gore in 2000 and Hillary Clinton in 2008.

The men are raising two teenage sons.