Talk:Chapter Thirteen: The Sweet Hereafter/@comment-32859958-20170515201836/@comment-32859958-20170518172619

With adoption it depends on when the kid in question was adopted. If you grow up together from when you were small, you kind of have a resistence to developing feelings for that person. Me for example: The mere thought of having something with my brother makes me sick (although that might be because he's an asshole, also). I think that happens whether you're related by blood or whether you're adoptive siblings.

However, if someone is adopted in later years, only, they lack that resistence. Look at the Fosters for an example ;) The same is true for those related by blood. There are reports of siblings who do not meet until they are adults, and then develop feelings for each other.