There is a simple explanation here http://www.wwlaw.com/title.htm
In terms of the mortgage - your hu*****and probably has enough income to cover the entire mortgage and doesn't need to have you as a co-borrower.
So technically you own part of the house but you don't have to pay the mortgage, how good is that!!!
For day-to-day living... it really doesn't matter, unless your hu*****and dies or you divorce him.