Nope. Community property law (which is what forces those who marry to divvy up the house) is only in effect if the home purchase was made AFTER you were already married. So it doesn't matter if you live in a community property law state or not.
I would think that because your name is not on the title to the home that you would not be considered to be an owner just by marriage. I suggest that you ask a real estate attorney as he/she can answer this question best as they are the legal experts.
Good luck to you!