Another happily married guy here... We've been married almost 16 years (Wedding date was May 26, 1990), and have known each other for more than 19 years (First date was Nov. 13, 1987 - but we were friends for a couple of months before that). We're really, really boring too. There is NOTHING about myself or my actions, thoughts, beliefs, conversations with anybody & everybody - that I wouldn't tell her. But, I'm not the most 'verbal-communication' type of guy and I'm sure I drive her nuts sometimes.
What's helped me is that we drive to work together most days (and have for the past 4 or 5 years). It forces me to actually TALK to her (I'm a pretty good listener most of time)... Lots and lots of conversations - most good, some bad. But, more often than not we have our differences worked out by the time we're where we need to be.