I too felt that if I JUST SAID THE RIGHT THINGS to my wife, or crafted her the PERFECTLY-WORDED E-MAIL, or sent her some SONG LYRICS or something . . . I could get her to change her mind.
Unh-uh. Doesn't work.
All you can do is work on your own boundaries, and what you will -- and will not -- abide. Then, GAL like crazy.