New York, Aug 20 (IANS) Actress Katie Holmes has apologised to her ex-husband Tom Cruise for humiliating him publicly by secretly filing for divorce.

Katie has apologised him. She feels bad about the way everything unfolded, and she's sorry that she embarrassed him. But I doubt they'll ever be friends, showbizspy.com quoted a source as saying.

Holmes, 33, filed for divorce last month after five years of marriage. They agreed on their divorce settlement within a matter of weeks, with Holmes getting primary custody of six-year-old daughter Suri and Cruise being granted visitation rights.

Tom rarely misses a chance to bring up their relationship, or say something catty, added a source.

Meanwhile, sources say Holmes can't ignore or compete with the campaign Cruise been waging to win their Suri's heart.

He's not parenting her. He's entertaining her, said the source.