The first time they put off their wedding, Pierce Brosnan and Keely Shaye Smith had just endured a near-tragedy. On April 22 the actor's son Sean, 16, was riding with five friends in a Chevy Blazer when the car plummeted some 130 feet into a Malibu ravine; he suffered a punctured bladder and a fractured pelvis as a result. Brosnan and Shaye Smith immediately called off their May nuptials. They would tie the knot, Brosnan told Entertainment Tonight, as soon as Sean "can dance."

A few weeks ago Sean put down his crutches and walked up and down the stairs at the family's Malibu home—"a momentous occasion," said Brosnan, 48. The couple's wedding, on the other hand, once more has been put on hold, until next summer. Parenting issues—this time far happier ones—are again the reason. Last week, it was confirmed that Shaye Smith, 36, a former TV journalist, is expecting the couple's second child in March. (Their son Dylan is 3.) "Babies come first," says Brosnan's publicist Dick Guttman. "They need a lot more attention."

Lately that's something of a Brosnan specialty. Sean—his only child with his late wife, actress Cassandra Harris, who died of ovarian cancer in 1991—had to be airlifted from the accident site. During the past few months the three-time James Bond and his fiancée "have dedicated themselves to Sean's welfare," says Guttman. "He's doing great now."

By the end of next year he may be teaching his new sibling to walk.