Hip-hoppin’ ladies man Kevin Federline is getting serious with new girlfriend Victoria Prince. In fact, things are so hot and heavy between the that they’ve considered having Victoria, a 26-year-old professional volleyball player, move in with Kevin and his two sons with pop star Britney Spears in the rapper’s Tarzana, California home.

And that news has left Britney a very unhappy girl. Britney is reportedly uncomfortable with a woman who has an arrest record for assault spending unlimited amounts of time with 3-year-old Sean and 2-year-old Jayden.

“Victoria loves the boys and wants to be apart of Kevin’s everyday,” an insider told In Touch Magazine this week.

But the source adds that “Britney isn’t happy about Victoria wanting to move in and be with the boys all the time.”