^ watch it and find out... It's a deep friendship kind of thing. Nezumi only see everyone as enemies while center goes around confess to nezumi like an idiot, yea .. Its better to just watch it.
I'm guessing you stole her away from her wedding~~~~ (Having a delusion that she did since Miku had a fiancee she didn't want to marry or something like that. XD)
Hahahaha... If only this we're true...... But she won't since she's a tsundere and will think that something like that isn't permitable due to her strict personality.