Why would my coworker ask if im married or engaged?

A recent coworker left the job and asked me on his last day "You're engaged right?" "Or married" not even if I have a boyfriend or something. I've mentioned "my husband" to another co-worker when he was around so I figured he would know. Why would he ask this? He's never asked something this personal and I didn't think he would care to ever ask. Lol.

Why would my coworker ask if im married or engaged?
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