Heart stirring, often sudden, emotions create a life or death commitment. Uncertainty of reciprocation. Later, the love may be returned. Tension between true love and father's control , disapproval, or choice. Most often, the father of the woman disapproves of the man she loves.
Some obstacle arises and separates the lovers, geographically or in some other way.
Illicit love or lust threatens the virtuous one. The young woman becomes a target of some evil man's desires and schemes. Rival lovers or multiple suitors.