"Ok, I've about had it with the lack of 'reporting'" in the media, Rimes, 28, writes in an extended Tweet Friday that calls the online story "150 percent untrue."
"Eddie and I are beyond happy and in love and look forward to one day sharing such private news with you all," she writes. "Hopefully will be able to enjoy it privately and share it with our family and friend's before the world knows."
Rimes signs off with a rumor of her own: "I'M PREGNANT TOO!!! LOL," she writes, and finishes with, "Thanks to all of our wonderful fans for the premature congats, but for now, let's all be happy we're happy and still and will remain together! Eddie and I felt we couldn't let this rumor go on any longer."
Rumors kicked into high gear earlier this week after the couple posted a Halloween photo in which Cibrian was on bended knee. The couple later said it was a joke.