John's former Strictly Come Dancing partner Johannes Radebe was among the first to congratulate the couple.
Here's what happened to the previous Star Bakers after their time in the tent.
The South African performer and Great British Bake Off winner made it to the Strictly Come Dancing final in 2021.
The former Bake Off winner recently admitted to falling "in love" with his Strictly Come Dancing partner during their time on the show.
The former Great British Bake Off champion has said he "fell in love" with his professional partner Johannes Radebe.
The former Bake Off winner spoke out in a series of impassioned Instagram posts.
"I think it's disgusting, he's cheapening himself."
"Please do not use my partnership with Johannes as a way to undermine or erode the beauty of Richie and Giovanni’s."
"Queer inclusion isn’t a box-ticking exercise for one series, it’s a fundamental shift in the narrative for life."
The former Strictly and Bake Off star was set to play Prince Charming in Andrew Lloyd Webber’s latest musical.