It's actually quite different from the other side....
The aspie has discovers something awesome about the special interest. He KNOWS that it made him excited and he wants to share it with you.
It's sometimes quite difficult to understand why other people aren't excited about these things. It's like you're watching fireworks explode and the other person is just looking at the grass. It's almost impossible to comprehend that they aren't excited.
Perhaps they don't understand the whole picture? Maybe we have to explain it from the beginning?
Then... the other person tells you to shut up.... they walk away. Your news is boring. YOU are boring.
You feel offended. Sad because you obviously couldn't convey your information.
You ask; What's wrong with me? Why am I so boring?
It's a blow to your self-esteem.