Aguilera new relationship 'not serious'

A source close to Christina Aguilera has played down reports of a relationship with movie set assistant Matthew Rutler.

The popstar apparently met Rutler on the set of her new film Burlesque.

The insider told US: "It's not serious. She's not looking to jump into a relationship right now. She has a lot going on with the movie and is focusing on spending as much time as possible with [her 2-year-old son] Max."

Aguilera filed for divorce from husband Jordan Bratman in mid-October.

The source added: "He's (Rutler) been really good for her and is helping her through this difficult time."