But an insider stresses Trawick, 39, won't be the only person handling his gal's uber-busy career.
"Jason will be part of the team handling her career," a source tells Us. "He won't be the only agent working with her, he will handling acting endeavors, but there will be a big music department also on her account."
Behind the switch? "Jason is someone the family trusts, they know he will make the best decisions for her and she feels comfortable with him," explains the insider. "WME is absolutely the best choice for Britney. They are the best at what they do and her team recognize that."
Meanwhile the duo's nearly two-year personal relationship is going strong.
After the mother of two celebrated her 29th birthday with her man in Mexico in December, she told Us, "My birthday weekend away with Jason was amazing. Best birthday of my life!"
Photograph by Christopher Polk/Getty
- Britney Spears
- William Morris Endeavor Entertainment