Kristen Bell and  Dax ShepardKristen Bell is denying that she married fiance Dax Shepard after she referred to him as her husband on Twitter.

On Wednesday night, Bell tweeted, "My adorable husband, @daxshepard1 voting 4 his favorite american idol. Over and over again."

Bell's rep told PEOPLE, however, that the couple were not married, and she has affectionately called Shepard her "husband" a few times in the past.

Bell and Shepard have been engaged for more than a year.