Britney Spears reportedly has a new boyfriend, reports.


The singer made her first formal public appearance in months at a birthday party in Los Angeles on Saturday, accompanied by Jason Trewick.


Trewick, who, according to sources, has known Spears “for years” — has been growing closer to her since her recent holiday in Costa Rica.


Spears’ father, Jamie, has reportedly given his blessing to the new romance, calling Trewick “a stabilizing influence.”


A source told Britain’s Daily Mirror newspaper: “Jamie thinks Jason would be a great match for Britney. She always had a thing for bad boys but now she realizes good guys can be attractive, too.”