How Can We Not Be Married in Heaven?

If we become one flesh when married, and if we rejoin our flesh in the end, how can we not be married in heaven? Well, we know that we're not. But the question then becomes a theoretical one of how do we explain this? And i think that that the answer can be found by looking at a couple of points of data. All the way through the bible, including the new testament, it was recognized that if a spouse dies, you are no longer bound to that spouse, and it is perfectly fine to remarry. If a woman's husband dies, she can marry another man without committing adultery. This is something saint paul is explicit about ino seven