A Texas judge ruled Thursday that two Dallas men married in Massachusetts may divorce in the state, The Dallas Morning News reported.

The ruling by Texas District Judge Tena Callahan was quickly criticized by conservative Republicans who support the gay marriage ban placed in the state's constitution by voters in 2005.

“The laws and constitution of the State of Texas define marriage as an institution involving one man and one woman,” Texas Attorney General Greg Abbott said in a statement. “Today's ruling purports to strike down that constitutional definition – despite the fact that it was recently adopted by 75 percent of Texas voters.”

Governor Rick Perry, who supports the ban, called the ruling “flawed.” Abbott said he would appeal the ruling “to defend the traditional definition of marriage.”

In her ruling, Judge Callahan said the state's ban on gay marriage violates the U.S. Constitution.

“This is huge news. We're ecstatic,” Peter Schulte, a lawyer representing one of the men, said.

The men married in Massachusetts in September 2006. One of the men, identified only as J.B., said the couple had been together 11 years and that the breakup was painful. He filed for divorce in January, citing “discord or conflict of personalities.”