Actor Damian Lewis has revealed his dying wife joked about him moving on and told their children "I want Daddy to have lots of girlfriends".
In a heartfelt tribute, Lewis described Helen McCrory as "a meteor in our life", following her death at the age of 52.
The actress was best known for playing powerful women such as Shelby family matriarch Aunt Polly in the BBC gang drama Peaky Blinders, Narcissa Malfoy in the Harry Potter films and the home secretary in James Bond film Skyfall.
Lewis, who married McCrory in 2007, said in the weeks before her death she had joked about his future relationships with women.
"She said to us from her bed, 'I want Daddy to have girlfriends, lots of them, you must all love again, love isn't possessive, but you know, Damian, try at least to get though the funeral without snogging someone'," he said.
Writing in the Sunday Times, Lewis said his wife had "lived by the principle of kindness and generosity" and always took an interest in others and "made them feel special".
"I've never known anyone so consciously spread happiness.
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"Even when dying in her last few days, when talking to our wonderful carers, she repeatedly said, 'thank you so much' in her half-delirious state.
"She always asked people how they were, always took an interest, made each person she met feel special, as though they were the only person in the room.
"Gave them her full attention.
"Made them laugh, always. There were few funnier people – she was funny as hell."
He said McCrory – with whom he shares two children – was "not interested in navel-gazing (or) self-reflection", and passed her positivity on to others.
"Helen believed you choose happiness," he said.
"I've never known anyone able to enjoy life as much.
"Her ability to be in the present and enjoy the moment was inspirational.
"Which is why she was able to turn her light so brightly on others."
McCrory was born in Paddington, London, to a Welsh mother and Scottish father, and was the eldest of three children.
She attended school in Hertfordshire, then spent a year living in Italy, before returning to London to study acting at Drama Centre London.
She has been a regular figure in prestige TV dramas, including the ITV hit Quiz, the BBC political series Roadkill, psychological thriller MotherFatherSon and the adaptation of Philip Pullman's His Dark Materials.
She was made an OBE in the 2017 New Year Honours for services to drama.
Lewis said his wife was "fiercely proud" of her career as an actress and approached it with "a rigour, an honesty and an intelligence that made others rise to meet her".
He added that McCrory had been "utterly heroic" in her illness and told her children repeatedly she had "lived the life I wanted to".
"She has exhorted us to be courageous and not afraid," he said.