An Oregon lesbian couple has filed a discrimination complaint against a bakery for refusing to make a wedding cake for them based on religious grounds.

According to The Oregonian, the state Bureau of Labor and Industries will investigate whether Sweet Cakes by Melissa in Gresham violated the state's 2007 law prohibiting discrimination in public accommodations on the basis of sexual orientation.

Aaron Klein, who owns the shop with his wife Melissa Klein, declined to make the cake for the women on January 17. Klein told the women that they do not make cakes for gay weddings.

“I believe that marriage is a religious institution ordained by God,” Klein previously told King5. “A man should leave his mother and father and cling to his wife … that to me is the beginning of marriage.”

“They can buy my stuff,” Klein said in explaining that he does not hate gays. “I'll sell them stuff … I'll talk to them, it's fine.”

Melissa Klein confirmed that she received the complaint on Tuesday.

“It's definitely not discrimination at all. We don't have anything against lesbians or homosexuals,” she told The Oregonian. “It has to do with our morals and beliefs.”

A spokesperson for the Bureau of Labor and Industries said they have had 10 complaints based on sexual orientation since the law's passage.