It looks like Christina Aguilera likes to make one thing clear: she wants the spotlight to be on her no matter where she goes. And that's probably why she is threatening to quit The Voice because of all the attention Blake Shelton and Gwen Stefani have been getting due to their romance.

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According to OK! Magazine on Tuesday, Christina doesn't like the fact that Blake and Gwen's constant PDA is on display and that it's practically taken center stage on the show. And that's why she's supposedly told producers that either they go, or she quits.

The site reports, "Gwen took over for Christina in season 9 while she was on maternity leave, but Stefani has since made her presence mandatory since she got involved with Shelton!"

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What's more, Christina is not used to taking a back seat, and that's why she's worried that she'll be "eclipsed" by the couple's love affair. And even though she loves working on the show and is dedicated to her team, she wants to make it clear that she's not a second rate star, either.

So far, neither Christina nor Blake and Gwen have made any comments about the rumors.

Keep up with Enstars for all the latest news on Christina Aguilera and updates on The Voice right here.