Board Thread:Spoilers!/@comment-4877635-20130614170253/@comment-1758442-20130619143739

Regina killed her husband, which annulls their familial relationship as far as I'm concerned.

If SQ is incest, then any romance with Ruby is bestiality while Grumpy/Nova is pedophilia. Swanfire might count as statutory rape too, depending on how old Emma was when she met Neal.