Good advice Charlie0. You are exactly right-- communication is the key to many things; although, it isn't ALWAYS the answer
Men are from Mars, Women are from Venus
10 Stupid things Couples Do to Mess Up Their Relationship (written by a crazy woman, but still has a great basis!)
those are the only two that I know off hand and can vouch for. I would also recommend getting a book on keeping sexual romance heated; this is also a good preventative interaction.
I have a HUGE thing coming out that narrates relationships in many of their aspects. Wait with crossed fingers.