We looked at it like […] a fairy tale. What are the elements that you’re going to see that makes it this genre, this specific genre? […] You’re probably going to have a castle, and a prince and a princess, if you’re looking at a fairy tale. We wanted to give these fundamental, not cosmetic, but prerequisite elements.
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J.J. Abrams, The Force Awakens director commentary
“Snoke warned Kylo that there had been an awakening in the Force, and his apprentice would face a test when he confronted his father. Kylo swore his loyalties were only to Snoke. But he was intrigued when he captured Rey, a Jakku scavenger whose Force abilities were raw but very powerful. A mysterious connection seemed to link the two.”
“On Takodana, Skywalker’s lightsaber called to Rey, who experienced a Force vision. She rejected this call to destiny, but was captured by the dark side warrior Kylo Ren with whomshe shared a strange connection.”
Reylo Source 