Jane Seymour smiles through split with 4th husband

Apr 15, 2013 at 12:32 p.m. ET

Jane Seymour has kicked her fourth husband out of their Malibu mansion amidst rumors of infidelity – but that hasn't dimmed her megawatt smile.

Jane Seymour

Actress Jane Seymour is graciously putting her best foot forward and appeared at a charity event with her allegedly philandering husband just days after the couple announced their split.

The actress and her soon-to-be ex James Keach attended the third annual Open Hearts Foundation fundraiser together Saturday and were all smiles on the red carpet, despite the fact that Seymour has kicked him out of their $23 million Malibu, California, mansion.

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Seymour confirmed that the pair are "negotiating the terms of their divorce" and plan to "continue their relationship as devoted parents to their children."

They share twin sons, 17-year-olds John and Kristopher.

Insiders say the marriage was in shambles long ago due to Keach's "wandering eye."

"She's finally had it with his antics. Their marriage was over a long time ago," a source told The Mail on Sunday.

"They've managed to keep it quiet from the public but this is no surprise to those of us who know them. James is a very charismatic man, but he's a flirt and has a wandering eye. They've been having trust issues."

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"Jane went into this marriage wanting it to last for ever. She is sad but resigned to the fact that it is over."

But Seymour betrayed not a trace of grief over her fourth failed marriage on Saturday, even cuddling up with her new baby granddaughter on the red carpet.

The former Bond girl was previously married to Michael Attenborough, Geoffrey Planer, and David Flynn, with whom she has two other children. She and Keach wed in 1993.

Image courtesy Getty