Didnt read the whole thread, so if someone has said it, i m sorry...
Try seeing it in another perspective...?
Some ppl need attention & re-assurance in a relationship...
Maybe its not that he does not want to fulfill promises, just that he needed to do something to gain more of ur attention?
Maybe... just maybe... u didnt realise that u were neglecting him?
or not enuff care & concern for him?
Or even if you do show alot, he might need more
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He might seem strong on the outside... but he might just be a
kitten hoping to be caressed and pampered at...
Even if its not the case, look at it in this light...
& u will find urself re-energised in this relationship if u want to keep it going...