When colleagues ask when you're getting married — how do you handle it gracefully?

I'm 29, unmarried, and apparently a curiosity to several people in my office who ask about this at a frequency that could be tracked on a spreadsheet.

I've tried different approaches:

"Haha, not yet lah!" — too encouraging, invites follow-up next month

Deflecting with a topic change — works occasionally but feels dishonest

The direct approach — "I prefer not to discuss my personal life at work" — works but creates an awkward moment I then have to manage

What has actually worked long-term is: a breezy "when it happens it happens!" delivered with genuine warmth and then immediately pivoting to asking them something about themselves. People who ask these questions generally like talking about themselves — use that.

Anyone else found something that actually works without creating friction?