Board Thread:General Discussion/@comment-5521796-20130201044544/@comment-5521796-20130201224747

I feel like, if Rumple didn't know that Regina was his kid, since his heart was completly set on finding the kid he does know about, his blood, which flows to and from your heart, would show him only that one thing.

It's far fetched, but we have seen strange things and limitaions magic has.