Hello from me, a widow since 2019. My answer would be, "it depends" . I was widowed after retirement, and really have never had an interest in getting back into the dating world.
But that does not answer your question. My concern is someone comparing the new companion to the old. Which would not be fair to the new companion. I know of people who have gone, happily into new relationships. I live in a senior apartment building, we have a few tenants who have become couples and seem happy,