Judging from her Twitter feed, the singer wants people to think she is.
In a picture Tweeted by live-in boyfriend Eddie Cibrian – then re-Tweeted by Rimes – the actor kneels in front of a sign that reads White Chapel Lunatic Asylum. Add to that, the fact that Cibrian is holding Rimes's right hand in his as she covers her mouth in excited shock.
Turns out, the stunt was more "trick" than treat.
"They are not engaged," says a source close to Rimes. "It was just part of the Halloween fun."
Reporting by MARISA LAUDADIO