User blog comment:B214/Volume 17 spoilers./@comment-4547267-20140227025154/@comment-16281343-20140301002716

This are the girls' reactions when Rose called Issei her BF.

Rias froze while smiling. Akeno ran away in a rush. Others (their reactions wasnt actually shown).

Multiply that to, I don't know.. maybe 1000?