User blog comment:B214/Kuoh Academy students finding out that Issei stays with the ORC girls and is dating Rias./@comment-24098614-20131215011722/@comment-16281343-20131215044438

I don't think the students know that Gasper's a boy. So if ever there's a rumor about him and Issei, that will be just like the normal rumor about Issei enslaving and blackmailing cute or beautiful girls.