LeAnn Rimes: I'm not engaged to Eddie Cibrian

Call off the champagne toasts: LeAnn Rimes and Eddie Cibrian are not engaged.

Rimes, 28, took to Twitter on Friday afternoon to slam E! News' Thursday report of a proposal from actor Cibrian, 37.

PHOTOS: LeAnn and Eddie's controversial romance

"I've about had it," the singer wrote of E!'s claims. "Even though this is positive 'news' it's not true."

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Ater blasting E! News and its reporters some more, Rimes said, "Eddie and I are beyond happy and in love and look forward to one day sharing such private news with you all and hopefully will be able to enjoy it privately and share it with our family and friend's before the world knows (contrary to reports on our intentions)."

She joked: "I'M PREGNANT TOO!!!"

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"Thanks to all of our wonderful fans for the premature congats," Rimes continued. "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."

Rimes and Cibrian's romance famously began last year — when they were both still married to other people. "What happened is not who I am, period," Rimes explained of the affair on "In the Spotlight with Robin Roberts: All Access Nashville" Wednesday. "But I do know how much I love [Cibrian]. So I've always said I don't live my life with regret. I can't."

E! Online sticks by story about Rimes-Cibrian engagement