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

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

Both couples are সেকেন্ড chances at প্রণয় for all characters involved. Emma's first প্রণয় 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 প্রণয় again. Before Neal died, he asked Emma to find Tallahassee - their hoped location for a happy future...