British actress Sienna Miller has abandoned her hopes of reuniting with former lover JUDE LAW - and has found herself a hunky model instead. Miller has reportedly been seeing NICO MALLEVILLE secretly for three weeks, after a brief romance with her FACTORY GIRL co-star Hayden Christensen earlier this year (06). The pair flew to the Mayan Riviera in Mexico for a romantic retreat, staying at Malleville's luxury Coqui Coqui spa hotel on Tulum beach. A source says, "The spa was the perfect retreat for them. It was ideal for Sienna and Nico to get to know each other better away from prying eyes."