First phase of marriage.
D001519:Behavior; D004644:Emotions; D005260:Female; D006262:Health; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D008393:Marriage; D010287:Parent-Child Relations; D012380:Role; D012725:Sexual Behavior; D012959:Socioeconomic Factors; D013997:Time Factors