Courtly Love

Courtly love was a medieval European idea of love dating back to the noble courts of the eleventh century. In essence, courtly love was a contradictory experience between erotic desire and spiritual attainment. Courtly Love is having a romantic affair without ever imagining it'll get consummated. The man in question will be in love with his lady, do almost anything for her and in her name. She may love the fella back, if he's fortunate— though that's not expected, and not really the point.

The lady in question (and, indeed, the man in question) will almost certainly be married to somebody else: when Courtly Love happens, marriage isn't for love, but for more pragmatic reasons. In periods where Courtly Love is popular, it may be the only form of affair that doesn't get condemned as evil, simply because nothing more intimate than kisses, handkerchiefs, and sonnets get exchanged.

This forbidden affair was characterized by five main attributes:

 

Aristocratic: As its name implies, courtly love was practiced by noble lords and ladies; its proper milieu was the royal palace or court.
Ritualistic: Couples engaged in a courtly relationship conventionally exchanged gifts and tokens of their affair. The lady was wooed according to elaborate conventions of etiquette and was the constant recipient of songs, poems, bouquets, sweet favors, and ceremonial gestures. For all these gentle and painstaking attentions on the part of her lover, she need only return a short hint of approval, a mere shadow of affection. After all, she was the commanding "mistress" of the affair; he was a faithful servant.
Secret: Courtly lovers were pledged to strict secrecy. The foundation for their affair--indeed the source of its special aura and electricity--was that the rest of the world was excluded. In effect, the lovers composed a universe unto themselves--a special world with its own places (e.g., the secret rendezvous), rules, codes, and commandments.
Adulterous: "Fine love"--almost by definition--was extramarital. Indeed one of its principle attractions was that it offered an escape from the dull routines and boring confinements of noble marriage.
Literary: Before it established itself as a popular real-life activity, courtly love first gained attention as a subject and theme in imaginative literature. Ardent knights, that is to say, and their passionately adored ladies were already popular figures in song and fable before they began spawning a host of real-life imitators in the palace halls and boudoirs of medieval Europe. 

 This love may be seen immoral when first thought.But there's nothing we can do if people were in search of some kind of excitement and secrecy at that time.Plus, if people do not marry as they love, what could be the real reason and can they be happy while there is no love? However, it must be good for ladies to be loved, have the attention all the time and not to have the obligation to love back =) Still, this kind of love does not ever come true as it's just a sign of respect ( maybe just in a flirty way) towards the ladies and lords.