Law proposed to his Alfie co-star on Christmas day (25DEC05) but sparked rumours their romance was in trouble by delaying the wedding until next year (05).
But the actor is furious about reports he warned Miller that he left his ex-wife Sadie Frost because of her high-octane lifestyle and would call off the marriage unless the 23-year-old tamed her partying antics.
His spokesman insists, "Jude is not unhappy with Sienna's lifestyle. They are very happy and are still planning to marry."
But an insider counters, "Jude was under pressure last week in America and wanted to talk to Sienna. But each time he called, she was out.