Both pairings involve a woman who is born into royalty and a man who is a common-born criminal または outlaw.

Both couples involve a hero and a redeemed villain. Both villains were seeking revenge for the death of a 前 love.

Both couples are 秒 chances at 愛 for all characters involved. Emma's first 愛 was Neal Cassidy while Killian previously loved Milah. Regina previously loved Daniel while Robin was married to Marian.

Before Regina let Daniel go in The Doctor, he asked her to 愛 again. Before Neal died, he asked Emma to find Tallahassee - their hoped location for a happy future...