"Kristina, in my eyes, is my sister," Garrett says. "She is a little trickster and a little smarty-pants! I think if anything, she would have feelings for Michael first, [rather] than the other way around. I think he is too preoccupied with everything going on around him to be interested in her. But, yes there could be a possibility of [romance] in the future."
How can there be any chance romance in the future your related! I find it wrong for 2 people to date and share the same "Dad" blood or no blood they were raised as brother and sister.