Well, crap. Don't have much to offer other than thoughts and prayers. Time for some soul searching there my friend. As a man, father, and husband, what are your non-negotiables? Follow your heart and soul to those.
BTW, I would say too that you can make this work - but I don't believe it will work with another OP in the picture. You deserve to give love freely and receive it back freely - it sounds like it won't be returned freely - or as some part of service - not sure how I would feel about that. You have to remember that your W is pretty broken right now and as much as you WANT her to find her way out of that, she needs to be the one to fully recommmit. So another tough question for you - how much of you wants to hang on just so you can "prove" that you have changed? Don't get me wrong, a worthy endeavor, but one based in ego. To me, the selfless thing to do is to just let go...and hope that someday she realises what she is letting go of...
All my prayers,
Sven
Never sacrifice the great for the good. Sometimes the beauty of grace is that it makes life not fair.