Britney Spears Goes Trampolining with Boyfriend Paul Soliz's Kids

Play video content TMZ.com Britney Spears isn't just back with on-and-off-again BF Paul Soliz ... she's also hanging with his kids again, and getting in some high-flying fun. TMZ obtained video of Britney letting loose, jumping around Thursday at a Sky Zone in Thousand Oaks, CA -- with 3 of Paul's children in tow. While it seems likely Paul was also there, we don't see him in any of the video. Britney’s obviously…