Johns PkI / Splash News 1 / 7
Johns PkI / Splash News 1 / 7

In an all-new interview, Brittany Murphy's husband Simon Monjack is speaking out just two days after his wife's untimely death.

"How did it happen? Her mum, myself and her family -- we want to know why we lost our baby," he tells

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Monjack says he hasn't slept since his mother-in-law found Murphy in the bathroom early Sunday morning and that although he didn't initially like the idea of an autopsy, he knew it was necessary.

"My initial reaction to the autopsy was, they're going to cut her open, I couldn't bear it," Monjack said. "That would break her mother, but we realized we needed to know. I look forward to getting the results."

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Monjack reveals that Murphy did suffer from a heart murmur and says she had been resting due to a bout of laryngitis.

"She was on herbal remedies that wouldn't speed up her heart," Monjack says. "There was nothing here that could endanger her; there was prescription medication in the house for her female time and some cough syrup. That was it."

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Monjack says that on the night before her death they relaxed in bed and watched "It's Complicated," "Public Enemy" and "The Princess and the Frog" while eating Thai food.

Monjack says that despite what people thought of them together, they were in love.

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"So many people have their views of us, but they never met us or sat down with us," he says. "I'm not perfect, but I don't think anyone is. I am feeling beyond devastated. I was in love with Brittany and Brittany with me."