Board Thread:General Discussion/@comment-5521796-20130201044544/@comment-4839682-20130209230205

how would Regina be Bae's step sister? Are you assuming Cora and Rump were married? If so, why make that assumption? She would be his half sister anyway; even if he and Cora married.. the blood relation supersedes a marriage relation. And Rump would only be Emma's father in law if she married Neal (if he's indeed Baelfire)

Just because you make a baby with someone doesn't mean you're married, and it does NOT make that person's family related to you. :)