Mrs. or Ms. ?

The elementary kids always confuse my name with Mrs. instead of Ms. I am immune to this after it happening all last year. A few days ago, a boy kept saying Mrs. over and over to get my attention. He is pretty loud and apparently annoyed another little girl to the point of her asking, "are you married?" When I said no, she told the boy to use the correct suffix Ms. (One smart fist grade girl!) The boy looked at me with a strange look on his face and said, "if you not married, do you live alone?" I kinda giggled and responded "yes." He thought for a moment and said, "well then, can I live with you?!" Ha! How silly of a thought process! He is inching his way up my 'cute list'! :o)