Views of people of the relations depend on their experience, education and expectations. In communication with the partner all hidden parties of the personality are shown, the person opens and becomes less protected, and the reverent attitude to its inner world allows not to wound him even accidentally.
The word "trembling" can literally be treated as "disturbing". It is a certain shyness in relation to other person, his feelings and experiences. And shyness not as a fear synonym, and more likely respect for personal space, fear to upset. More widely tender relationship can be understood as care, some extolment of an object of love over others. Often such perception of the partner prevails in the first weeks or months of the relations when the period lasts so-called "candy buketny".
As a rule, reverent attitude, but not just tenderness and desire to care, girls summon. Historically it developed so that they are considered as a high ideal, a muse, the ladylove. Especially brightly it was shown at the time of knights when men devoted to the great lady verses and feats, without daring even to touch her. However, nobody will tell about the real relation of knights to the matter any more, but versatile historical novels support this subject in this way.
With arrival of equality and blossoming of feminist movements the high ideal lost former positions, but the principle of the attitude towards the woman cultivated many years as to a weak and fragile being is strong still. And not only in male minds. For this reason women so long remember not presented flowers and the door which is not opened in time before them: from time to time, let not always, almost everyone wants reverent attitude.
It is quite logical that the longer partners communicate, the learn each other more, the it is less in their joint life of the place to the secret and mysteriousness which is nearly key element of "reverence". But at this stage sincere care, support and lack of attempts to compare the partner to others give similar effect. Tender relationship – perception of the partner as ideal. Also it concerns not only behavior of the man concerning the woman. Care and admiration are necessary to the stronger sex at all not less. The reverence element in the relations is almost similar to romanticism. Diluting with it everyday life, unexpectedly giving pleasant trifles and compliments in all sincerity, it is possible to make the relations brighter, more harmonious, more interesting. The reverent attitude gives to the woman the chance to feel the princess, and the man – the knight. Of course, even in it it is necessary to know when to stop not to "spoil" the partner, having made him the egoist and the despot.