Kamasutra 3.4.44

3.4.44

ratibhāvanām abhyarthyamānāyāḥ kṛcchrād guhyasaṃsparśanam//

But old authors say that although the girl loves the man ever so much, she should not offer herself, or make the first overtures, for a girl who does this loses her dignity, and is liable to be scorned and rejected. But when the man shows his wish to enjoy her, she should be favorable to him, and should show no change in her demeanour when he embraces her, and should receive all the manifestations of his love as if she were ignorant of the state of his mind. But when he tries to kiss her she should oppose him; when he begs to be allowed to have sexual intercourse with her she should let him touch her private parts only and with considerable difficulty; and though importuned by him, she should not yield herself up to him as if of her own accord, but should resist his attempts to have her. It is only, moreover, when she is certain that she is truly loved, and that her lover is indeed devoted to her, and will not change his mind, that she should then give herself up to him, and persuade him to marry her quickly. After losing her virginity she should tell her confidential friends about it.