Article continues below advertisementKevin Federline weighed in just one day after his ex-wife Britney Spears decided to voluntarily enter rehab. "Kevin is aware of the reports that she has checked into rehab and that if she needs help, he is happy that she is getting help," Federline's lawyer, Mark Vincent Kaplan, told TMZ in a statement on Monday, April 13. "That the decision appears to be one that she made and not one imposed upon her by others if it was.