NG, I completely relate to the feeling that life is too perfect and something bad is going to happen. That's how I felt too about my M. In retrospect, I think I knew that something wasn't right--I just didn't know what it was.
My H also says all kinds of stuff about our R--how he's been unhappy for a few months, then it's a few years, then it's our entire M. The fact that he changes his timeline every time is, to me, proof that he's full of it.
I think I've said this before, but it feels better to me to have H living elsewhere. It's still hard and I have moments of agony, but trying to get through daily life for months while he was here but not really here was worse.
Me/X-H: 47/48 T 19 yrs M 16 years D14 D10 ILYBINILWY: 10/07 H moved out 6/08