I have always had a problem with wayward wives who stay with the OM but want to stay friends with their BH's! It almost seems to make everything OK for the wayward if you stay best buddies while boinking the OM. I can almost here them saying "See everything worked out for the best!"(For her of course) "We maintained our friendship", or "Lets stay friends for the kidsake" (Isn't it better for the kids to stay married??).
If it is truly the end of the marriage...then yeah not being hostile to each other (which you two are not) is best. So check! You have achieved that. But friends??? As long as the OM she had during the marriage is around then no way should you accept that!!! If she truly wants to be friends but divorced then drop the OM...then there is a clear slate to maintain the friendship!!
