[She's never had a boy react to her like this. It's almost like Shintaro except less like a loser NEET.]

I don't remember you being rude... [If he's shy around girls maybe she should try to cheer him up a little or... something.] Eh, but it's fine if you treat me like a guy you know. I don't care. I don't want you to feel freaked out around me.

[Even if it is a little flattering.]