A federal judge who is hearing arguments in a lawsuit that challenges Michigan's ban on gay marriage won't be making his decision until June.

The state attorney general's office is asking Judge Bernard Friedman to dismiss the case, saying same-sex marriage is not a fundamental legal right.

But Friedman held a hearing Thursday at Wayne State University law school. He said it's better to wait for the U.S. Supreme Court because any opinion from the nation's highest court in a California case could affect the Michigan case.

Lawyers for Hazel Park couple Jayne Rowse and April DeBoer say Michigan's ban on same-sex marriage is a "mean-spirited relic of anti-gay discrimination."

READ: Couple challenging Michigan ban on gay marriage

DeBoer and Rowse said they were disappointed that there wasn't an immediate resolution.

"It's kind of hard. But, like I said, he's got to have all the facts and he needs to make the right decision and we're confident that he will and our children will be ours," DeBoer said.

The lawsuit began as a challenge to a state ban on adoptions by same-sex couples. Rowse and DeBoer have adopted children but they can't adopt each other's kids. They amended their lawsuit to also target a 2004 constitutional amendment that says Michigan only recognizes heterosexual marriage.