According to reports, Nicole and Joel obtained their wedding license last week and they went to great lengths to keep it all under wraps.
A source told RadarOnline, "Nicole has never been in a rush to get married to Joel. She's so happy with him and their little family that she didn't feel the need to change the way things were between them.
"But when Adam died, she freaked out. She realized life is fragile and short. She doesn't want to have any regrets at all, and she does want to be Joel's wife."
The couple already has two kids together, a two-year-old daughter, Harlow Winter Kate Richie Madden and their newborn son Sparrow James Midnight Madden, so it makes total sense for them to get married.
Their reps refuse to comment on the story, which makes us believe it's really true. If they did get married, and we hope they did, congrats to the happy family.