Kamasutra 5.4.47-48

5.4.47

sā prāyeṇa saṃstutasaṃbhāṣaṇayoḥ/

(1) A woman who, having observed the mutual passion of a man and a woman, brings them together and arranges it by the power of her own intellect, such an one is called a go-between who takes upon herself the whole burden of the business. This kind of go-between is chiefly employed when the man and the woman are already acquainted with each other, and have conversed together, and in such cases she is sent not only by the man (as is always done in all other cases) but by the woman also.— The above name is also given to a go-between who, perceiving that the man and the woman are suited to each other, tries to bring about a union between them even though they be not acquainted with each other.

5.4.48

nāyikayā prayuktā asaṃstutasaṃbhāṣanayor api/