Hard to tell what makes STBX spin as she does. I do think there is definitely something amiss for her to leave a man like you -- Handsome, incredibly intelligent, athletic, loyal & a great father.
All in all, it smacks of her attempting to regain control back in the R. You're wise to keep it on your terms & communicate accordingly, although it does appear to be a little easier on you when you ignore the bait. Easier said than done, when, as you say, there's "collateral damage."
>> "I just think you can't get over the fact that I'm with lots of other men now and that I just love slutting around."<<
Even though that's just blow'n smoke, it's just plain mean.
