NeNe, 51, shared an Instagram collage of photos of Gregg for his special day.
"Ain’t nothing like the love of a Leo man!" she captioned. "My life would be empty without you in it Gregg! You have taught me that pleasing everyone is impossible but pleasing you is a MUST."
"HAPPY BIRTHDAY GREGG! I LOVE YOU FOREVER," she continued before finishing with "Everybody go wish my hubby a happy healthy birthday."
Basketball Wives star Jennifer Williams and many more left birthday love for Gregg in the comments section.
NeNe and Gregg first wed in 1997. They share one child together, a son named Brent. She has another son from a previous relationship.
The reality television couple separated in 2010 and she filed for divorce on April 29 of that year. The divorce became finalized on September 29, 2011.
They reunited and got remarried on June 22, 2013. Their ceremony was part of a RHOA spinoff named I Dream of NeNe: The Wedding that premiered on Bravo on September 17, 2013.