Oh, the joy of being a celebrity couple.
Even if you're perfectly happy, there will always be someone to speculate that you aren't—and if you're really blessed, that someone will have the ear of your friendly local tabloid.
So even the most solid couples will have the opportunity to enjoy a headline now and again that they're "headed for a split," or "divorce is imminent," or one of the two is "heartbroken and alone." Or, perhaps just as annoyingly, a pair might have the fortune to be labeled "the perfect couple."
No pressure there.