Chance for Michael & Kristina Romance in the Future!

First off I want to see utterly completely gross. I was just reading a Drew Garrett article on Soap Central which can be found here. Drew Garrett is talking about his new role as Michael, and why GH had recasted Michael. In the article Drew talks about his on-screen sister Kristina, and here is what Drew has to say.

"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.