Stranger things have happened.

Alison Sudol sided with Lily Allen after the singer dropped a scathing album about their mutual ex, David Harbour.

The actress, who dated Harbour in 2018, had a telling reaction to Allen’s Instagram upload promoting “West End Girl” last week.

When the Grammy nominee, 40, shared the album cover and song list on Oct. 20, Sudol commented, “🔥🔥🔥🔥🔥🔥🔥.”

Social media users praised the “Secrets of Dumbledore” star for chiming in.

“Alison has been there so she knows what Lily has been through,” one fan wrote, with another adding, “Love your support.”

Sudol’s rep did not immediately respond to Page Six’s request for comment.

Harbour moved on from Sudol with Allen in 2019, with the duo tying the knot the following year in Las Vegas.

Their breakup

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