I think you hit the nail right on the head when you said "If I weren't married to such a sweet guy..." I know, in my case at least, that the reason I go on is for the ones in my life that I care about and who would be hurt by my loss. And I do not eaven have a wife or any romantic interest, for that matter. Still, my mom, my kitties, and my sweet little Pug puppy-dog need me... so I continue on. Although I do admit, that at times, it is difficult... like right now. I'm in so much pain right now that I just about can't stand it. I know you don't want to hear others' problems, right now... but I tell you so you understand that you are not alone... either in you pain or feelings and fears about it.
Feeling like it's me who's being mashed!