wait what i don't understand what is it? what did he realize? what did he see?

I think he realized that Yigon wasn’t the one who was reading all his texts, because a number he didn’t recognize texted him in which he recognized how the text was written which he identified as from Yigon, I think in that moment he realized that there’s no way Yigon would text him in a new number if he still has his old number.

he realized that yigon hasn’t been the one seeing his messages bc he got a text from an unsaved number ((yigon’s new number)) and he’s like no one talks to me like that except for yigon… wait LOL plsss hope they clear things up