Rasarnavasudhakara 1.137

1.137

kāma-tantreṣu nipuṇaḥ kruddhānunaya-kovidaḥ |
sphurite cādhare kiṃcid dayitāyā virajyati ||

skilled in the treatises on erotics, adept at placating an angry woman; / and when his beloved's lower lip quivers [in deceit], he becomes slightly indifferent;