[Linda Gillham]

There are a few different responses to these types of questions, you can choose one that feels comfortable for you, or modify one of these suggestions.
“It’s Christmas, could we talk about this another time?”
“That’s something I’d like to keep private, if that’s okay.”
“We’re taking things one step at a time, but I prefer not to talk about it.”
“I appreciate you asking, but it’s not a topic I want to discuss right now.”

The key here is to respond politely and then direct the conversation back to the other person with a question like “how was your holiday / job / life”