Haha, what a twist. The sister would want to stay with Big Brother. Man I hope he accepts that. That would be something. I never really disliked him, just sort of felt bad for him to the point where I would cheer him on a few times.
Hope he will recover his memory and love to her.
Ahh, forget the memories as long he fall in love with her again. And this third brother should be wise to choose her twin sister who wants to stay with him.