I know a lot of ppl will tell you to not look into an A because it doesn't, or shouldn't really change the approach. But if you are seriously worried about having your clock cleaned in court, having that knowledge could be extremely beneficial for you as a negotiating tool.
As I stated earlier, in PA you can file a D under no-fault or a fault-based meaning that if she wants to file against you, and she files a no-fault, it becomes a fairly mutual D.
did you know that if one person wants a D and files under "irreconcilable differences" and the other doesn't want a D, that is actually considered an "irreconcilable difference?"
If She wants to file that way (which is the ONLY way she can file if you haven't given her any reason to file a "fault" claim), there will be little you can do about things regarding the D. You hope that your L does his best to protect you, your interests and your assets.
What if your W actually was having an A, though? legally, you have some options now. Your L could counter file with a fault-based claim which would protect your assets to a much greater degree. Your L could also threaten to counter file as leverage to get more of what you want. No one wants their dirty laundry aired out in that way, especially if you live in a nice neighborhood with good friends that W would like to keep.
DBing wise, knowing or not knowing shouldn't change the way you approach your sitch: You should be GALing and setting boundaries.
legally, KNOWING an A exists could benefit you greatly, but ask your L, they'll know better than I do.
