Am i the only one who can do this or can yall do it too?

Whenever i read bl manhwas, there's always that moment when mc can't hide their feelings, whether it be feeling shy, annoyed, something bothering them, and specially when ml says smth that bothered the mc.

For ex: mc asked ml what they preferred in a relationship and didn't like or got sad over what ml said. But then, ml noticed it.

It's one of the things i really hate about stories probably because i'm avoidant and i don't really like showing my other side to people, only happiness and annoyance (like not srsly annoyed, but annoyed that there's a quiz, smth like that).

I'm the type of person who can hide their feelings well, specially when feeling sad, bothered, alone, and hurt by what a person i like said. I'm just curious if when the time comes when i finally get to like someone, i can hide my feelings to them, and if that is just a part of something that will happen in the future (which i don't want to).