Hawks wants to try something. He notice how similar Dabi is to his childhood best friend and crush Touya. If he is right then, dabi is without a doubt Touya Todoroki. 

Hawks: hey touya

Dabi: [not really paying attention] hey kei

Hawks: 😮😮😮

Dabi 💭: shi-

Dabi: it's not what you think

Hawks: liar

Dabi: don't know what your talking about

Hawks: I have connected the dots

Dabi: you didn't connect sh*t

Hawks: I have connected them

Dabi: ...oh look at the time, I got to go

Hawks: oh no you don't

Dabi: bye