She may have said yes to to him, but it is what he is saying that is the real story. He has at least two (pretty sure of three) sidepieces out there who are being reassured that this is all for the show.
And he may not be lying to the sidepieces. Her contract is up for renewal and she doesn’t have much of a storyline. This is the time for storyline engagements. And they don’t even live together unless filming is happening. And sometimes even not then. He lives over an hour away where the sidepieces live. She is well aware that he is seeing other people and has been for years. I doubt she even believes this story they are currently spinning.
The sad thing is that neither of the newly betrothed have a to piss in. They NEED this filming contract. Perhaps even badly enough to have a wedding the season after next. If there even is a season after next. Hell, I’m not 100% sure there will be a next season. Until then, the show must go on on social media.