How much do you share?

Hey everyone! I was just curious if people feel comfortable talking about how often they share the fact that they are autistic with other people.

Personally it's something I usually keep to myself because most people assume I'm nuerotypical (obviously for some people passing as nuerotypical isn't an option, but since I can do it I sometimes hide behind it a bit) and I get worried they'll think I'm lying if I say anything. The only people who really know are my closest friends and a few others here and there.

How many other people have these same problems? Or are you more comfortable sharing your autism with other people? How have people reacted when they find out?