I don't know. I can't affirm how I would react to a situation that has not occurred.
However, I will say this in response to a hypothetical situation: If my significant other died and we were in good terms, I would take my time to get involved again. This means for at least one year I'll be free of any involvements. If there were kids, it would take longer. I want them to be able to adjust fairly. If I didn't have any kids, then I probably would just take approximately one year or possibly 6 months or more to adjust.
I don't know how I would feel really. I may be so in love that I would never again get involved with someone else; or I may just be so depressed and afraid I'll never find someone that good. You know when it comes to matters of the emotion, it's difficult to control it. Having noted my nature, I can see myself never getting married again if I were so in love with him, especially if I had kids with him. I think I can say something similar about a divorce too, though.