How can you explain to someone.....?

[Pregali64]

I have a serious problem, and I need some advice. Someone that I know in real life, someone near and dear to me, wants to know what it is that I do on my computer and what kinds of websites that I go to. A part of me wanted to explain it to them, but I just couldn't. I'm deeply afraid of what would happen if anyone I knew would find out about all the things that I'm sexually interested in. And I'm terrified of how they would view me if they found out.

This is what I wanted to ask you all. How could you explain to someone that you're sexually interested in something, not just mpreg but sexual fetishes in general, that doesn't fit the social norm?