Here's one I picked up from a few men's groups back in the nineties in the Slocan Valley. It is a complaint I heard from a lot of men.
When men get into a new relationship, they tend to lay a lot of their cards on the table: hangups, idiosyncrasies, bad habits and such. The complain was that women tend to collect those things for a time when they are pissed about something (which is always kept a mystery, and they use all those cards as weapons to shred the guy's ego. Any other guys ever experience that one (if you got the nads to say so)?