User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-4547267-20140118001952/@comment-1359322-20140118094537

We can't really measure love between seperate individuals after all. But if we based on reaction on what happen during Issei's "death". We can know that Rias and Akeno loves Issei to the point where they can't live without him. Probably the same goes to the other girls too.