Complex sentence: Kraven fancies himself in a relationship with Selene, even though she spurns him at every turn, yet Kraven was so obsessed with Selene that the more she refused him, the more he wanted her.
Split into simpler sentences: Kraven fancies himself in a relationship with Selene, even though she spurns him at every turn. Yet, Kraven was so obsessed with Selene that the more she refused him, the more he wanted her.