My wife and I are thinking about divorce. But probably not for the reason you're thinking of.
Would be interesting to hear what conversations you had leading up to what to most people, was a very drastic proposed solution to your wife's problem/dilemma. How did the proposition come about? Who suggested it?, What was the boyfriend's input, etc. and how did each of you feel during the process.
Also, have you moved any further on, had any more discussions, and made any decisions? How long do you feel this arrangement should last for, is this something you have discussed? Would like to hear what has happened since your last post...