After reading the old Greek tale of "Cupid and Psyche", I see some differences and similarities between this tale and that of the Brother Grimm's "The Frog King". To start, the old Greek tale of "Cupid and Psyche" follows the story of a king's youngest daughter. Like in Grimm's "The Frog King", she is the youngest of three daughters, and her beauty is absolutely stunning. In the original Grimm version, even the sun who has seen nearly everything is awestruck by her beauty; however, the tale of "Cupid and Psyche" details Venus's jealously, for the young princess steals away all of her men. Beyond this similar beginning, the two accounts take rather different ways to ultimately end the same with the young princess marrying and living happily ever after.
"Cupid and Psyche" reveals much when it comes to trust and whether appearance is vital in a loving relationship. After the oracle prophesied Psyche's marriage to a monster on the top of a mountain, her parents led the young princess up the mountain and abandoned her there. Upon exploration of the mountaintop, Psyche was met with an ornate, magical home that housed her husband and seemingly everything she could ever want. Her husband never made his physical appearance known to Psyche, and justified that this sort of relationship was better for the both of them. By the damaging advice of her older sisters, Psyche prepared a lamp to view her mysterious husband whom she had already come to love so much. As she leaned in to get a better look at her beautiful husband, a drop of the oil from her lamp fell onto her husband. He flew out of the window in a flash and she followed him. Unfortunately, lacking the capability of flight, she plummeted to the ground. Despite her disobeying the trust that Cupid had set up with Psyche, he still cared for her, and in the end saved her from his own mother, Venus, once again. Thus, Cupid was able to forgive Psyche, and their marriage was filled with enduring love.
A similar theme occurs in "The Frog King", where the young princess makes a promise to the frog that she is meant to honor. Despite her repeated breaking of this promise, the frog persists without giving up on her. This commitment is truly tested when she becomes so angry that she throws him against her bedroom wall with an incredible might. Ignoring the fact that this is the act that turns the frog back into a human prince, he still is willing to love her after this. Frog or prince, it is still a powerful statement that he puts up with all of her nonsense out of love. In the end, like in "Cupid and Psyche", the two marry and live happily ever after with a love that will last forever.