Pratt apologises to Heidi Montag

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HAPPIER TIMES: Spencer Pratt has apologised to his ex Heidi Montag for acting out after their breakup.

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Former The Hills star Spencer Pratt has apologised to his estranged wife, Heidi Montag, for acting out after their breakup.

The two starred on the MTV reality soap, which ended in July. They separated last May after one year of marriage.

Montag cited irreconcilable differences when she filed for separation from Pratt in June. Pratt said he would release a sex tape featuring Montag.

The 27-year-old Pratt said the demise of their relationship was so painful he wanted to lash out.

He admits making "certain private issues public" and "horribly embarrassing the one person who meant the world to me."

He said his behaviour was "outrageous and infantile".

Pratt said he had failed at handling his divorce with dignity and maturity and vowed to work on himself.

- AP