John Mayer is allegedly “too busy” for a committed relationship with Jennifer Aniston. Sources say the singer wants to focus on his music and doesn’t want Aniston’s high-profile lifestyle.

“John’s goal is to keep a low profile this year, and Jen is about as far off from low-profile as you can get,” says an insider. “He just wants to keep out of the spotlight and finally concentrate on his music. He’s always in and out of the studio [and] that’s his focus.”

The source adds that Mayer and Aniston are not ready to tie the knot, despite reports claiming the singer was set to propose on Aniston’s birthday.