Hi Breton--
When my sister-in-law turned me on to DB (on the second day after my bomb!), the first thing she asked me was "Do you want him back or not?" This sounds like where you are now. Yes, a walk on your birthday should not be a major issue!! This might be the first thing you want to clear up for yourself.
Angelica-- Welcome to the Stable Wives' Club! No, my H isn't passive/agressive, just needs to earn his rent on the planet by saving people. As a high school administrator, he was great for the students. But as the boss of other grown-ups, this isn't the first time his attention has been interpreted as personal interest; just the first time he was messed up enough to act on it.
What IS it about these nutty young women that is so attractive??