"For me, it's not really about sex as much as it's about sexual maturity, so I think that's what I'm concerned with right now," Keith said during a Wednesday appearance on Married at First Sight: Unfiltered.
The topic was broached after Keith and his Married at First Sight co-star, Elizabeth Bice, watched back a Season 9 clip of Iris' mother telling her to just jump into the sex pool and learn how to swim given her virginity was a growing concern for Keith.
Keith acknowledged on Unfiltered he had hit the jackpot with his mother-in-law, "no question" about it.
He apparently didn't even know that conversation had taken place prior to watching it unfold on a recent episode of the Lifetime reality series.
Keith explained he was glad to see Iris had an outlet to discuss her feelings as well as a loved one willing to share a different point of view on the couple's physical intimacy.
"It makes me happy to know, like, when she has these certain feelings, that she has somebody like her mom in her corner to kind of reason with her and play devil's advocate and think outside of how Iris may feel about it," Keith said.
About one month into the Married at First Sight process, Keith admitted he and Iris were getting ready to test the waters, so to speak.
Iris bought edible paint for Keith to lick off different parts of her body so they could become more intimate and feel comfortable doing so, and the activity appeared to get pretty steamy.
Both Iris and Keith want to be sure their marriage will last forever before they sleep together, and Keith has made it known he feels a lot of pressure in order to not take something so special away from Iris after 27 years of being a virgin.