In a conventional and traditional setting, it is generally wise for a girl to tell her parents when a man approaches her with serious romantic intentions. In many families, parents are regarded as guardians who have greater life experience and can help their daughter make careful decisions.
Keeping such an approach completely secret may create unnecessary problems, especially if the relationship becomes serious. Parents may be able to notice things the girl, because of her emotions, might overlook. They can ask important questions about the man's character, family background, intentions, values, and ability to take responsibility.
Traditionally, a man who genuinely wants to marry a woman is expected to approach the relationship respectfully rather than encouraging secrecy. Informing the parents can therefore help distinguish between someone who has honorable intentions and someone who simply wants a casual or hidden relationship.
However, telling one's parents does not mean surrendering every personal decision to them. A girl should still have a voice in choosing whom she will marry. Parents can offer guidance, protection, and counsel, but her feelings, consent, and personal judgment also matter.
In the traditional sense, involving parents early can promote openness, trust, and respect between both families. It can also prevent a relationship from developing in secrecy and give everyone an opportunity to understand the intentions of those involved. Ultimately, openness with trustworthy parents is often a wise step when an approach appears serious and may lead toward marriage.