Was Emily Blunt a victim of infidelity in a former relationship?

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The actress, who's happily married to her husband John Krasinski, was previously in a relationship with jazz-pop singer Michael Buble. The two called it quits in 2008 amid rumors that he was cheating on her.

On Wednesday, Entertainment Tonight posted details from Blunt's recent interview with Howard Stern where he mentioned that she and Buble were "perfect" together likely because they both give off classy and elegant personas in their work. Blunt let out a laugh and said she didn't know if she would call it that, but they "had a good time."

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Stern then asked Blunt if Buble was unfaithful to her.

"Well...," Blunt said as she trailed off with a sigh. "I don't know, it's complicated. I'm going red!"

Stern asked her why she was going red.

"Because I never talk about it," the actress responded. "I never want to talk about it."

The interview then got a little more awkward when the radio host asked the movie star if she's ever had a love scene with a co-star where he got aroused from it.

"Once," Blunt admitted. "I think it's just better to laugh about it."

"I think the reaction was, we were filming and they shouted, 'Cut,' and I went, 'Oop!' and he went, 'Oop! Sorry.' And that was it," she added. "We laughed about it because I don't want him to be embarrassed. I think that would be unfair if I was like, 'Oh my God!'"