what does it mean ?.... please help me

what does this sentence actully mean ??

"we live across the street from this boy from Canada..."

I did n't get it !... it means :
we live across the street in which a boy from canada lives ?

or

we live in a street and across from a boy from canada

or something else ???

please help me

Don't you know what "across the street" means? Let's say you're walking down the sidewalk along a street, and then you step into the street and cross it to the sidewalk on the other side. You are now across the street from your original position.

So, the sentence means that you have a house on one side of a street and on the other side of the street, directly opposite your house, there is another house, in which a boy who is from Canada lives.

This could be rephrased as follows:
A boy from Canada lives across the street from us.

To be even more explicit.
We live on Maple street. A boy who is from Canada also lives on Maple street. The boy from Canada lives on one side of Maple street and we live on the other side of Maple street.

Hope this helps.

very good answer
thank you