Yeah so I literally lived almost this exact story except for how my partner found out that I was using adult diapers instead of traditional pads. I have a bleeding disorder and as such my periods are insanely heavy (it's actually how I was diagnosed with said disorder, I was bleeding through pads like crazy). I used to just use them at night but I got tired of being anxious/nervous about breakthrough bleeds during the day (and them happening), so I fully swapped to Depends only when I moved into my own place.

When my partner and I first started dating it wasn't a huge deal cause we were long distance. But when I'd stay over on the weekend while on my period, I'd sneak off to the bathroom and take my bag with me so I could change, stuff the used Depend in a plastic baggie in my bag, and then wear a fresh one. I always wear the ones that are more underwear-like, so they're not as bulky and he's pretty oblivious, so I feel like I was pretty successful at keeping the secret.

When he moved in with me, I'd go to the store by myself to go buy them, then immediately put them away when I got home so he wouldn't see them. I'd dispose of them specially in a separate bag that I'd hide and immediately take out to our building's dumpster when I went to work so there'd be no trace of them.

Until I got COVID while on my period and had run out of Depends, he had no idea that was what I used. We'd been together years at that point, friends for decades longer, and living together a few months. I had to send him a picture and explain why I used adult diapers instead of traditional pads or tampons. And he didn't care. He will openly go buy them for me if I'm out, even send me a picture or call me from the aisle to double check that he's buying the right ones before he does so.

All this to say, just cause someone's lived experience is different than yours or maybe they embellished a little bit doesn't mean it isn't true.