surprise..surprise

Yesterday i hv to spent all day editing a chapter for our local editorial...the editing was with an expert who is very well verse in English...she did teach me how to write a good write up...anyway when it was lunch time, i start making small talks with her..she just open up about her family background..a divorce woman with 3 children...all boys..her husband is leaving with one of her son...then i asked if his son is married, she automatic asked "why r u asking, r u interested in my boys n r u still single n want to know my boy?"...that was a shocked to me...why, does she said that? Does my face looks so desperate? I was just asking with no intention of knowing her boys, it is just a friendly questions...i was nearly chocking when she said that...anyway she tell me that 2 of her boys are married the 3rd child is still single age 36, maybe because of low self esteem (i hv been told that he is short n dark while his brother were fair and tall) or maybe because heart broken causing his not umarried yet...anyway when she said do i want to know his son and...it was like a second wave shock to me...why? why? Help me..i just being polite...