Looking get my wife to see the light.

Hello everyone,
I am a married man with a wife that deserves much more than I can provide. The only issue in our marriage is sexual, and I know a nice Black Cock could change everything. She has always been attracted to Black Men, and needs a real man that can be sexually dominate. It will take a bit of time, but I know it is a realistic goal as our dating relationship started with me dedicated to her from the moment we met, while she continued to date, and have sexual relations with other men. She had in the past stated that although she knew it was unfair, the only kind of open relationship she would consider, is one where she was free to date, but the guy had to remain faithful. I hope it's not too late, but I don't feel that it is.