It is a little known fact that Thorin had come to dislike the race of elves; but perhaps it hasn't always been this way, maybe, just maybe, once upon a time there wasn't such high disdain held towards them. The dwarf-Prince's heart isn't as nearly as impenetrable as the vaults of Erebor, a chance find and visit cause a form to grow between two races. If anything the elf-Princess's curiosity about everything, and anything which involved or was created by the hand of dwarf's in turn piques his own curiosity, not finding how something so delicate could find fondness in things so hardened. Regardless, a love formed, two pieces complete only to split thanks to a dragon's attack of the jealousy of what Erebor had within.