For some of us, a marriage is not good until it passes the test of time. But there are signs in the beginning that give a clue. For instance, sexual attraction is not enough; there should be signs that each is willing to put the other first. That’s real love. Then there should be agreement on the important issues of life; it helps if they are both of the same religion.
One of them is the leader of the pair, at least in the major decisions, like children. And of course, children usually cement the bond, at least when both marrieds are mentally sound. There are many exceptions to the rules, but only if the marriage is firmly founded on God. Who else but the author of life can insure success?
My advice to newly marrieds? I say, as they say in boxing, roll with the punches.