Rachel Bailey, 30, from the US started breastfeeding her husband Alexander, also 30, in 2017.
Not only has it made the couple closer, Rachel says, it’s also been good for his health.
She insists it’s “not a kink for them” and they aren’t embarrassed by it as “nothing bad has come from it all”.
The mum-of-three said: “It’s a bit of a taboo subject, but we wanted to share it because we don’t think it’s bad and we aren’t ashamed.”
Alexander began drinking Rachel’s breastmilk when their middle child, Aria, now six, was breastfeeding.
She said: “I went away on a cruise with Alexander. However, I forgot my breast pump and was badly engorged for two days.
“I was in so much pain and I was scared about getting an infection, so we decided that my husband was going to try drinking the milk to relieve me.
“We were nervous about the idea of him breastfeeding from me but as soon as we did it, we realised it was perfectly fine.”
She added it was “an instant relief when Alexander latched on”.
Rachel said: “On top of that, it has also created a more special bond between us which we never would have had if we didn’t start this.”
The couple talk about breastfeeding on their social media, and even say it comes with health benefits.
Rachel said: “We realised there was nothing wrong with me breastfeeding him, and it would actually be good for him as it is so nutritious.
“He didn’t get a cold for two years after he started drinking my milk and so many people said his skin was so much better too.”
The potential benefits of breast milk in adults is limited. There is some evidence drinking your own breast milk could fend off infections or mild illnesses and, when used topically, it can offer wound-healing properties.
A 2019 scientific review found breast milk could ease eczema and dermatitis.
It also found if it was applied topically to the eyes of infants with conjunctivitis it was comparable in effectiveness to a common antimicrobial.
Furthermore, it suggested the sugar molecules found in breast milk – human milk called human milk oligosaccharides (HMOs) — could help prevent group B Streptococcus infections in humans.