PS and dont forget, he sounded desperate and.. resigned, helpless, given up even perhaps, in a letter to you just this week:

"You have come to believe that I cant offer you what you need and I feel the same way now. I believe it. The more you state it, the worse I feel. (I dont blame you, it's good that you share it, it's not your fault). I feel helpless. Like a paraplegic. Why cant I offer to you simple things? I am useless. An *rsehole."

You dont get past feeling like that a day later and able to have a happy, romantic evening!?

It sounds like he has lost all confidence in himself. I dont know, but you keep wanting something from him and it looks like he is trying to tell you that, for whatever reason (grief over his mother, guilt, shame, remorse, depression, who knows!) he just doesnt have it to give you right now. But, he used to didnt he? 4-5 years ago, before all this mess?? If he did, and it was enough then, then you know whats possible (and more if he can grow with it), but if it was never there.. then, what are you hanging on for??