Helena Bonham Carter and Kenneth Branagh met while starring as love lovers in the 1994 movie

"Mary Shelley's Frankenstein," but Emma Thompson was unprepared to learn of their affair.

In an interview that was published in the New Yorker on Monday, Thompson admitted,

"I was absolutely, utterly naive to the fact that he had relationships with other women on set."

The 63-year-old Thompson stated, "What I learnt was how simple it is to be deluded by your own desire to deceive yourself."

The "Love Actually" actress claimed that when she and Branagh, 61, decided to split in 1995, she was only "half alive."

Thompson eventually went on with "Sense and Sensibility" co-star Greg Wise,

She reflected on her 19-year marriage to Wise, 56, and remarked, "I've learnt more from my second marriage just by being married

Any negative feelings toward Branagh and Bonham Carter, who dated for five years after their on-set encounter,

are "all blood under the bridge," Thompson said in an interview with The Sunday Times in 2018.

Anything like that is impossible to hold onto. It is useless. She remarked, "I don't have the energy for it.

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