Yup, our rules have changed too. But, it seems for every rule that's dropped, she adds another.
Our rules include:
Safe sex
No one that lives in our small town or neighboring towns
No taking one for the team
HER RULES
No one young enough to be our child (we have kids in their 30's)
No playing without the other unless it's part of a threesome
HIS RULES
She's free to break her rules
I'll abide by her rules