St. Louis Circuit Judge Rex Burlison heard arguments Monday on a challenge to Missouri’s gay marriage ban brought by four gay couples who were married in St. Louis by city officials in June.

The couples are Tod Martin and David Gray, Bruce Yampolsky and Terry Garrett, John Durnell and Richard Eaton, and Miranda Duschack and Karen Davis. All but Duschack and Davis attended Monday’s hearings, as The St. Louis Post Dispatch reports. Then Recorder of Deeds Sharon Carpenter performed the ceremonies in Mayor Slay’s office with his consent. Attorney General Chris Koster filed an injunction to stop the marriages. Though he says he supports same-sex marriage, he also commented that he felt bound to uphold Missouri law (the state has a constitutional amendment banning same-sex marriage passed in 2004).

Koster did not defend the state’s ban in court on Monday. Instead, that duty fell to Assistant Attorney General Jeremiah Morgan. The couples were represented by St. Louis City Counselor Winston Calvert.

The AP reports:

Overturning Missouri’s constitutional ban “would at least open doors for the next generation not to have the trials and tribulations that we had,” Garrett [a plaintiff in the case] said after the hearing. “We should be able to decide who we love.”

But Assistant Attorney General Jeremiah Morgan told [Judge] Burlison that Missouri law limits marriage to between a man and a woman. He argued that 71 percent of Missourians voted for that definition of marriage in a 2004 referendum, and the U.S. Supreme Court has time and again allowed states to define marriage.

“It is the state’s, and the people’s, responsibility to make that decision,” Morgan said.

Calvert noted that an increasing number of states are allowing same-sex marriage, including most of the states surrounding Missouri.

“The laws forbid some people from choosing who they marry,” Calvert said. “It’s only gay and lesbian couples that are treated as second-class citizens by the state.”

The AP also points out that this hearing comes just a week after a federal judge “in Kansas City [heard arguments] on a suit filed by 10 couples over the state’s failure to recognize same-sex marriages performed in other states.”

The ACLU has a pending lawsuit challenging Missouri’s gay marriage ban as well.

Regardless of the outcome in any of these cases, it is almost certain that each will be appealed.