Sit down together and listen properly, then you may have an understanding of the pressures he feels, take a step back look at yourself have you changed but do not realise it yet?
Was the move here for you, him or both?
It takes time to adjust to any and everything these days, the credit crisis may be something you have not even considered, are you better or worse off?
Look at all aspects of your life, if you still can not find the answer it is time to move on by yourself, do not allow this to bring you down also.