I told an Air Force friend (now dead, and, no, I didn't kill him after telling him). I think he liked young girls (he was Swedish, not that it matters...), so I think he just thought diapers were tame, considering his own proclivity.
I told a therapist, very specifically, since I was paying for help in resolving issues I was having with women and relationships, in my life. She honestly didn't tie it to my root issues, and the subject was dropped forever.
The friend told his wife, who I'm still in contact with. After not connecting for decades, early in our "catching-up" onversations, the topic was brought up, but I fairly rapidly changed the subject, since I was taken off guard. I wouldn't have minded discussing it, but I was off balance, at the time, and it's never come up again.
Of course, my then-GF, that became my wife, had to be told, long before a commitment was made. She was curious, but probably just thought of it as a single-man's masturbatory method, which would probably go away with marriage, right??? Wrong!
So, to deal with the basic question of whether to divulge, or not, I say, also, don't ask, don't tell. Consider how many of your friends/family/coworkers have divulged their deepest secret sexual desires to you, and you get your answer.... No one does. Keep it quiet, except from your partner. No one NEEDS to know, and it COULD screw up some good relationships, and, for what??? So you can wear? You can already wear....
Stealth. It goes a long way to keep the peace.