The professor who published a controversial and widely discredited study about same-sex parents and adopted children in 2012 is making headlines again this week for more bizarre claims about the effects of marriage equality, Good as You reports.

Professor Mark Regnerus of the University of Texas at Austin gave an hour-long speech at the Catholic Franciscan University of Steubenville in Ohio, recently and said that marriage equality will make straight men demand open relationships and ask for anal sex from their wives and girlfriends.

“If gay marriage is perceived as legitimate by heterosexual women, it will eventually embolden boyfriends everywhere, and not a few husbands, to press for what men have always historically wanted but were rarely allowed: sexual novelty in the form of permission to stray without jeopardizing their primary relationship,” Regnerus is quoted saying in the Huffington Post. He added the “normalization of gay men’s sexual behavior” will cause an increase in the “practice of heterosexual anal sex.”

You can listen to the full speech on Good As You’s Soundcloud page here.

Back in 2012, the researcher came under heavy fire for a study he did about same-sex parents raising children. The study, called “New Family Structures Study,” said children of gay couples are worse off than kids raised by straight couples. Numerous sociology experts and scholars criticized Regnerus’ study.

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