Lily Allen 's return to the top of the charts has been anything but quiet, with the 40-year-old singer's new album West End Girl – a blistering collection of tracks about betrayal, lust, and heartbreak – sparking a frenzy among fans convinced she's using it to take a pointed aim at her ex-husband, Stranger Things actor David Harbour , 50.

The new record's release has been hailed as a comeback for Allen, whose unflinching lyrics have always blurred the line between pop confessional and public reckoning – but insiders tell RadarOnline.com this one goes far further.

Not only does West End Girl lay bare her anger over a marriage gone wrong, but it may also have been carefully timed to coincide with the end of Harbour's biggest professional triumph – Netflix's final season of

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