In a nutshell, fell madly in love with an "older" man... we were blissfully happy, ski weekends in Vermont, two dogs, laughed and talked into the wee hours, sailing weekends in the summer, supportive of each other's hopes and dreams, shared a love of theater and literature, the whole package... then his mid-life hit and he found religion in an extreme way. Wanted me to convert. I tried... but eventually it all fell apart. We shared custody of the dogs for awhile (not a good idea, trust me!). Finally, almost a year later, we had the "let's be friends lunch" where after a bunch of small talk, he said it was better when we were together, how he missed our life, how the religion thing was silly, etc... and at that moment, I hated him. Worse, I caught him sneaking a look at my hiney on the way out of the restaurant and never took another one of his calls again.
After that, life has been great.