Love Stories, or affairs of the heart center on passion, emotion, and the romantic, affectionate  involvement of the main characters (usually a leading man and lady), and the journey that their love takes through courtship or marriage. Romance films make the love story or the search for love the main plot focus. Oftentimes, lovers in screen romances (often romantic dramas) face obstacles and the hazards of hardship, finances, physical illness, racial or social class status, occupation,  psychological restraints, or family that threaten to break their union and attainment of love. As in all romantic relationships, tensions of day-to-day life, temptations (of infidelity), and differences in compatibility enter into the plots of romantic films. Romantic films often explore the essential themes of love atfirst sight, young (and older) love, unrequited love, obsessive love, sentimental love, spiritual love, forbidden 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 difficultie, declare their love, and experience life "happily ever after" - implied by a reunion and final kiss. Many romantic films do not have fairy-tal , wistful-thinking stories or happy endings, although love serves as a shield against the harshness of the real world. Although melodramas and romantic comedies may have some romance in their plots, they usually subordinate the love element to their primary goal - to provide humor or serious drama.