The most important thing in any relationship is trust. It seems most everything else hinges on that. Where do you think your wifes trust level will be if you get her drunk and set up in a pre-arranged sex affair of any type.

Talk to her. Listen to her. Communication is key to any undertaking involving more then one person. Talk with your wife, about her thoughts, feelings, fears and desires. Don't get angry or upset if she says no now. Let her think it over, who knows what next month will bring.

Go slow, don't rush her but love her no matter what.

Good luck.