What does snooping get you? Probably just hurt and pain. Make it part of your DBing. Don't snoop. No matter if the opportunity presents itself or not. Yes I know it is hard, especially when we are not only wanting to save the M but protect ourselves in case of D as well. But better off if you don't know. If it is something you should know, it will be revealed to you in time.
"Acceptance doesn't mean resignation. It means understanding that something is what it is and there's got to be a way through it."--Michael J. Fox