Intro: The only reason I'm not saying "No explanation needed" is because many of you probably haven't actually read this manga. DO SO.
Proof: Basically, Komi is the most popular girl in school, despite not having any real friends. How is that so? Because she suffers from an anxiety disorder that prevents her from talking normally to people. She communicates via writing and expressions. But despite the odds, she sets out to make one hundred friends! And Tadano turned out to be the first, accepting who she was with ease (he's a bit of a weirdo himself).
There's so many moments in the manga that it's just worth reading on its own. DO SO.
What I think: Ravioli, ravioli, do not lewd our friend Komi. And if you do, it better be vanilla with Tadano.
