Ok looking back, Zepar said that Rikka doesn't know she's actually been having sex with other men and she showed her getting spitroasted.
There's always the possibility Zepar is lying or something so there's a couple possibilities:
1. Rikka is a virgin and the dreams are really just dreams.
2. Rikka actually lost it ages ago, but still believes she's a virgin cus she didn't do it while "awake". She did in fact get spitroasted (and it was hot). In this case the dreams were true all along and she was in a hypnotic state kind of like sleep walking.
With possibility 2 in mind, I want to see how she actually lost it. If possibility 1 is the case, I'd be happy too.