Maverick Jester
The Special One
My friend, this is where you gotta think like me.
Tell her you only date women who participate in anal/bring their girlfriends & create threesomes/give 2 hour BJ's/etc (whatever you fancy, basically.)
This turns your "bad situation" into a what one calls a "win-win" situation....
either she is gonna leave you alone, or she is gonna give you what you want - either way, you can't lose no matter what the answer is.
This takes balls though, but as you would know higher risk = higher reward.
what have you got to lose though?
^ This.
But as other posters said- you screwed her once. Why not do it again? Specifically the things she doesn't like...