I think you being mysterious with your wife with be good for both of you. She knows when she calls you will come running and hope for a crumb of hope. Its wrong. She chose her life to be this way and at some point you will go on.
Now, if I can only take my own advice
Me: 46 FWS: 36 Married and Divorced 4/07, Pregnant 7/07,False R 7/07 Baby Girl born 3/08 Kicked him out because OW: 7/08 5/10 He realized what he had and lost. Moved home! REMARRIED 3/14/11!!