“X
Factor
“ judge Nicole Scherzinger and her long-time boyfriend, race driver Lewis Hamilton, have broken up — apparently over the new TV show’s workload.

Lewis, 26, and Nicole, 33, had been going out for four years. A report in the British papers over the weekend said that the former Pussycat Doll was under “enormous pressure” to make “X Factor” and “was desperate to please Simon [Cowell], her boss.”

“This, plus Lewis’s crazy international jet-set lifestyle put immeasurable strain on the pair,” a source told London’s Sunday Mirror.