Both have supernatural elements, themes of true love across time, being chased by a psycho, and intense protectiveness of one another, both the FL and ML.
Lots of twists and turns in both of these shows as they explore ethical concepts and the behaviors of those who are motivated by greed or envy.
Similar personality types: A callous, career-oriented woman, paired with a man who is so desperately sweet that you want to reach into your TV and squeeze him!