Liam Neeson revealed he was “smitten” with ex Dame Helen Mirren from the moment he met her, as the pair made an appearance on Friday’s upcoming episode of “The Graham Norton Show”.

The duo, who were an item between 1980 and 1985, were quizzed about their relationship as they chatted to the talk show host, with Mirren, 72, admitting she and Neeson, 65, got “serious” after meeting on the set of 1981 flick “Excalibur”.

When asked about dating Neeson, Mirren replied: “We didn’t date, we lived together for four years – we were a serious item for a while. Lucky me!”

Neeson then added of the moment he found out she was interested in him: “Before I met her and we worked together I had read somewhere that if she fancied a guy she would imitate his walk behind his back. I turned around one day and she was doing that to me.”

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Not ending the romance chat there, Neeson also revealed something he’d never told Mirren before: he was smitten with her from the very first moment he laid eyes on her.

The actor said of their first encounter: “I remember being on the set and standing with Ciaran Hinds as Helen walked towards us dressed in her full Morgan le Fay costume and we both went, ‘Oh, f**k’ and I was smitten.

“I think Ciaran was too but I was very smitten,” he added.

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Mirren then replied: “I never knew that. You’ve never told me that before – it’s amazing.”

The actress appeared on the BBC talk show to promote her latest film “The Leisure Seeker,” while Neeson is currently starring in “The Commuter.”