Kamasutra 1.5.16

1.5.16

svayaṃ vā taiḥ saha saṃsṛjyeta/ madavarodhānāṃ vā dūṣayitā patir asyās tad asyāham api dārān eva dūṣayan pratikariṣyāmi//

(i) The husband of this woman has violated the chastity of my wives, I shall therefore return that injury by seducing his wives.

(h) This woman loves me ardently, and knows all my weak points, if therefore, I am unwilling to be united with her, she will make my faults public, and thus tarnish my character and reputation. Or she will bring some gross accusation against me, of which it may be hard to clear myself, and I shall be ruined. Or perhaps she will detach from me her husband who is powerful, and yet under her control, and will unite him to my enemy, or will herself join the latter.