Self-assured Spencer Pratt is already sounding off about his estranged wife Heidi Montag after she filed for divorce from him on Friday.

"I love Heidi but our marriage was a show -- it was part of 'The Hills' world," Pratt tells "And that world is on a sound stage."

"It's clear that reality TV-fame-loving Spencer Pratt does not fit with my ex-wife Heidi Montag's ambitions for a motion picture actor/pop star career and being a single sex symbol for the world," he continues, adding: "Some say if you can't handle the heat get out of the kitchen, Well, Heidi couldn't handle King Spencer's fame so she got out of the marriage."

Montag cites irreconcilable differences as the reason for the divorce in the court filing obtained by ET.

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