Hate to tell you, but where I live (legal experience talking here) no lawyer will present it as an adultery case and no judge will take it in to account anymore in deciding property settlement or award of alimony or baby support. Right or wrong, it’s pure and simple unreconcilable differences. Depending on if children are involved and what the ages are and the egregiousness of said unreconcilable differences, the judge can at his discretion use adulterous testimony to help decide parental rights and responsibilities or in other words who gets primary custody. In truth 90% of cases are now “negotiated” by the two opposing lawyers and a court appointed advocate and the judge merely signs off on the settlement decree. However, the old “he or she cheated on me” deal is fast becoming extinct. The courts simply don’t want to hear it anymore. As far as the judge is concerned, he/she doesn’t care what or why. It’s become all about the equitable division of property within the law and trying to see that the children have equal time with each parent as much as possible.