Vaishnava Samhita. Shri Hariraya Charitam. Vol III Book VII Chp 4 Shlokas 39 - 40

मात्रा स्वस्त्रा दुहित्रा वा नाविविक्तासानो भवेत् |

बलवानिन्द्रियग्रामो विद्वांसमपि कर्षति ||

कृष्णभक्तिबलेनैव दुष्टः कामः प्रशाम्यति |

यतः कन्दर्पजनको वासुदेवो जगद्गुरुः ||

A man should not sit on the same seat along with any woman or his own sister or mother even. For, the sensory passions will overpower even great scholars. One should subdue even the most formidable desire with the help of Krishna bhakti alone. For, even the God of love (Kama) is the son of Lord Krishna (and hence under His control).