Why would a woman be curious about my age?

The super in my buildings wife is always trying to figure out my age. I've never asked her hers. Why would I?

She's married, has 4 kids. Two older daughter and son then two young boy and a girl.

The husband is friendly but sometimes hints at wanting to socialize with me alone.

It's weird a bit and I can't figure out what may be going on.

Why would a woman be curious about my age?
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