The scene between Drew and Tiff was even sweet.
I don't want to assume anything, but if of the two hypothetical villains, only Drew was present as an observer in Sterling's sex scene, it's possible that the dev allows the chance that she will take the path of good(?) in the future and will be admitted to the harem as its member literally. Of course, I can be wrong. Although, it could be a long way and a couple of "What if" I would watch with her.
I don't want to assume anything, but if of the two hypothetical villains, only Drew was present as an observer in Sterling's sex scene, it's possible that the dev allows the chance that she will take the path of good(?) in the future and will be admitted to the harem as its member literally. Of course, I can be wrong. Although, it could be a long way and a couple of "What if" I would watch with her.