<human>: We are an interracial couple that has been going out for about a year now. Her parents are Chinese and hold very traditional views. Particularly concerning relationships.  
  
Their views are pretty strong against any interaction with my girlfriend. They dislike if we was to hold hands or put our arms around each other when sat down. So much so that my SO has been scolded for showing too much affection towards me.
   
I can handle this because we can freely express our love when we are alone or at my house. My only concern is when it comes to sex before marriage.  
  
The other day I was left alone with my SO Dad for a long period and we was openly chatting about an array of subjects. Eventually the conversation swung around to marriage and sex before marriage.
Luckily I was able to throw in a few questions which changed the subject and thankfully he was left unaware.
  
But this close call has scared me and I am now worried that this subject might come up again. I don't know how I am suppose to respond to his views when he expresses them and how not to make it obvious that I have banged his daughter.
   
If they was to ever find out they would likely throw her out or disown her.

Can you summarize the given text in a few sentences?
<bot>: How do I avoid 'no sex before marriage' talk with my SO's mum/dad? What's the best way to handle the situation if we are caught out?