Hi Lou, my heart goes out to you - it really does and I can understand why you feel so sad, rather than angry. From what you post, he really appears to be trying and wants to get there, but is also struggling and perhaps putting too much pressure on himself to 'feel the whole range of feelings from the get go.'
It may be worth you both just coasting along and allowing a little time for settling in before making any big decisions - perhaps a few months just to release the pressure and enjoy the nice things about being together..
Hopefully someone with more experience will chime in too...but in the meantime, do take care and keep posting as I do feel your sitch is at an important stage...
Big hugs to you xxx
T 13 M 7 Me 48 H 46 SS 15 BD 7.14 PA D final 5.16 (H filed)
We receive & we lose, and must try to achieve gratitude & embrace with whole hearts whatever of life that remains after the losses - Dubus