Hello Ted. My sympathies on your loss. You ask is this normal...I don't think there i such a thing as "normal" in what any of us are going through. Each case is different unto itself. But, are others in the same situation as you and feeling the same pangs of guilt? Yes! I could have written an almost identical post. My husband passed on Halloween, four days after our 15th wedding anniversary. The final year of his life he bravely fought cancer but at the same time was slowly pushing me away. Intimacy was non-existent. If you ask me, the man I knew and fell in love with died a year before he physically left this Earth. In the meanwhile, I had reconnected online with a friend I went to elementary school with. He was able to lift up my spirits when the task of caregiving was overwhelming, make me feel desired when my husband pushed me away. After my husband passed, I experienced the guilt of wanting to start up with him immediately. However, I had to take a step back and allow myself to reevaluate the situation and give myself a chance to grieve. That was hard but this is all hard. I've come to the conclusion that my friendship was more important that starting a physical relationship that would most likely destroy everything at this point. Down the road, things may change but I can't force it.
Hope this helps.