Paul, What is unenforcable about saying "I can't promise I'll stick around forever"?
Is this untrue?
As far as sleeping alone, did you mean alone alone or just preferring to sleep with your wife only?
And what about making up a few game plans and letting your wife see that you are willing to be flexible but that there must be SOME solution to this problem.
Such as: Solution #1: Develop a bedtime routine with kids that leaves parents at least a half hour of alone time. Cosleep afterwards.
Solution #2: Designate one bedroom as the adult room and make plans for a date there at least once per week.
Etc.
I think the real issue here is that you are afraid to confront the elephant and demand that your wife address the lackanookie.
I know where you are at right now. For several years I tried to convince my H that his religious fervor was tearing us apart. Now this was ONE of the issues but not my biggest issue at all. I was just afraid to bring up the other one--sex.
Once I did, things began to immediately improve. The religious stuff was still there to deal with but we had already dealt with the largest issue between us--as a married couple--so dealing with the individual stuff was a piece of cake.
Maybe you could confront her tonight and tell her that your biggest issue is really not the sleeping thing but the fact that you are living as a celibate.
Do you think she would leave instead of agreeing to have sex on a regular basis?