Dakota Johnson makes surprise cameo on ‘SNL,’ portrays mistress in Lily Allen’s song about infidelity

Lily Allen is sharing painful moments from her past with the help of friend Dakota Johnson. 

During Allen’s performance of “Madeline” — a song that is believed to reference a mistress who allegedly had an affair with her ex-husband David Harbour — Johnson made a surprise appearance onstage, portraying the mistress. 

As Allen performed the song, Johnson — whose silhouette was seen behind a sheer curtain — said, “I hate that you’re in so much pain right now … He told me that you were aware this was going on and that he had your full consent.”

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Dakota Johnson made a surprise appearance during Lily Allen’s “SNL” performance. (SNL)

“If he’s lying about that, then please let me know. Because I have my own feelings about dishonesty. Lies are not something that I wanna get caught up in,” she added.

Before the song concluded, Johnson stepped out from behind the curtain, walked behind Allen and gave her a gentle kiss on the cheek. 

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The two embraced in a hug once the song finished.

Allen and Harbour split in February after four years of marriage.  (Getty Images)

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In February, sources confirmed to People magazine that Harbour and Allen had split. In 2020, the couple tied the knot in Las Vegas with their wedding being officiated by an Elvis Presley impersonator.

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Allen released her bombshell album, “West End Girl,” which share intimate details about the couple’s divorce. Allen mentioned Harbour’s alleged infidelity in the title track. 

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Allen has alluded to Harbour’s alleged infidelity in her bombshell album, “West End Girl.” (Getty Images)

Last month, Allen and Harbour listed their Carroll Gardens home for just under $8 million, months after their divorce announcement.