I'm in a similar sitch. If you are still talking with your wife you are very lucky. My wife has already admitted being in love w/ OM 16 yrs younger and she's 38! Use the techniques in the book while you still have communication! My wife won't talk to me at all and we live in the same house!
At least you can still talk to her about something. Take advantage of it because one day she may not let you discuss anything but your kids with her. Take it from me, I know. Now all I have is the LR since she won't end her PA/EA.
ME: 39 ring on wife:38 ring off WAW/MLC son:17,11 dtr:9 mar:17yr Bomb4-27-07. EA/PA 2/07 with 22yr old. DBing 5-19-07 My story on the link below. http://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=1069470&page=0#Post1069470