Yoyo {{{{{{{{{Hugs}}}}}}}}} change is hard and scary but you know it and your friends here know it...it is time.
Plan B, no contact. You think that your H will forget you if you do this BUT that is not the case. Since I went dark on my H about 3.5 weeks ago, this is the most he has asked about me to my D28 and SIL. Also when you are not in the picture what can he talk about with OW? Seriously. When you remove yourself from their situation they have only each other to look at and maybe it will not be so rosey.
Do you take a chance of losing H? Absolutely -- but what is being accomplished now by you still being in his life. You are starting to feel bad about your self and you are a wonderful woman, mother and yes -- wife.
Glad you got the book.
Me 53 H 50 D16, D29 M 22 years bomb 7/08 INH - alien pod replaces H 8/08 - OW (direct report), I work there also bomb II - H moves 10/1 expose ow 10/22 D to be final 9-09