After a bit of reflexion, Daniel take his book and, wile looking at his roommate and Abigail through the cracks of his door, he carefully wrote, ‘My roommate Gregory is and, for everyone else than me, always was, a girl named Gwendolin. Gwen, like everyone call her, is purely Greg as a Girl, nothing less, nothing more.’
Still watching his roommate and her friend, Daniel saw Greg slowly changing into Gwen, her clothes adapting accordingly, along with her chat with Abby and some slight change on the place's furnitures.
Dan was chocked by how Gwendolin turned out. While anyone who knew Greg would easily see him in Gwen, the resulting girl wasn't any less sexy, if a bit tomboyish.
The other thing that surprised him was the sexual tension now clearly visible between the two, when it was totally absent when Gwen was still Greg. So Danny wrote ‘From now on, while still remembering Gwen used to be Greg I, Daniel, also have all the knowledge of her new past and character, like I would if I only remembered her as Gwen, like everyone else.’
And then he knew. He knew that, since Gwen was basically Greg as female, he changed his straight male roommate into a lesbian girl, and since her childhood friend Abigail was gay too, in this new reality, they naturally became girlfriend. (Daniel knew Gwen had called Abby her girlfriend when she said she would come, even if he didn't have the memories backing it up, not really.)
In shock, he dumbly walked to his bed before falling on it. On his path to said bed, he crossed a mirror, but didn't notice his reflexion in it had now orange eyes, instead of the blues one he wished himself.