Hello Laila

If I understand your post right, then you seem to feel you have to tell your friend and perhaps your mother as well.

"With my best friend its a bit different - she might actually understand to a certain level - I don't know. If I phrase it right and in the right moment."

I can see quite some things in your post that sound familiar, though not in all details. (My mother have known for many years, so nothing would be news for her.)

And its is a problem your Master dont want you to go open, all i can say is that you might try talking to him again and explain your need not to live hidden since that cause a conflict for you.

"And who do you talk to about it? "

With the collar my submissive did wear at all times, it was something we had to address sooner or later, and so we decided to do that in a way we had control over, so it was us two who did choose when to step forward.

And afterwards I can only say that after years of more or less living in a lie, it felt very good, and no reaction was negative at all, from lukewarm tolerant to outspoken positive from a few who turned out to have the same interest, but before we got out of the closet never had dared talk about it. Some individual started to keep more of a distance, and I think found it to be disturbing, but it was not a closer friend.
So overall I can say it was all for the good in the end.