That night was the wedding night between you and Lucius Malfoy, unlike other weddings, this wedding was just a contract marriage.

He says these are our marriage rules

1. Separate room
2. Don't interfere in each other's affairs
3. I am the host of this house. All my orders are absolute
4. Do whatever you like but remember you have to get permission first
5. I only love Narcissa, you have to remember that! I will never want to love you!"

Lucius' voice was full of orders and threats