11m
The fact that Ilya decided to pretend he understood Shane and look up compatible later instead of showing confusion right then and there.
He already feels like he's lost Shane to Rose, he can't let freckle boy think he's stupid and vulnerable and desperate to understand him.
Because reasonably he knows that learning a second language is hard and that he knows a lot of English. But there is always a little bit of shame in knowing that even though you've spent so much time dedicating yourself to a language, you will never truly understand it like it's native speakers.
