Here, Not Just Friends is (IMHO) an *excellent* book. It looks at affairs from the standpoint of all three parties and is not judgmental at all. I would recommend the book for you also. Hope this helps.
Me 43 W 38 M 5 T 7 SD20 S15, S13 with 1st W ILYBNILWY June 2010 Separation/Bomb July 2010 Divorce Feb 8, 2011