Thank you for your replies. As it turns out, the answers you have provided are too bad for me, for I decided not to apply for a change of status upon marriage. Actually, I was going to and all ready to until my "Dear John" letter came.
I didn't feel it was right to apply for such status when I already knew that the marriage was over.
Turns out I was wrong, but it's still good to know. Thanks again for your replies!