Romantic films often explore the essential themes of love at first sight, young with older love, unrequited romantic love, obsessive love, sentimental love, spiritual love, forbidden love/romance, platonic love, sexual and passionate love, sacrificial love, explosive and destructive love, and tragic love. Romantic films serve as great escapes and fantasies for viewers, especially if the two people finally overcome their difficulties, declare their love, and experience life "happily ever after", implied by a reunion and final kiss. In romantic television series, the development of such romantic relationships may play out over many episodes, and different characters may become intertwined in different romantic arcs.