I've noticed that myself, jabber. Maybe the happy new-old couple have contributed money toward the extravaganza wedding, and within a few weeks, when the bills start to come in, they start fighting with each other.
Money worries bring stress. It's funny how a couple who has lived together for a long period then marries, starts to think they now need all new furniture, maybe a new home, and once you add that into any existing debt....poof. Out come the expletives and the Henckels (fancy knives)