For
NPR, Hazel Cills wrote that "Boy's a Liar Pt. 2" "encapsulated all the things PinkPantheress does best: sweet and salty minimalist pop with a deep, emotional core at close listen", while LaTesha Harris praised it as "never overstay[ing] its welcome", calling Ice Spice's verse "funny". For
Dork, Abigail Firth wrote that adding the song to the end of the album was "unnecessary" and "the only part of
Heaven Knows that feels like an afterthought". For
Pitchfork, Matthew Ritchie called "Boy's a Liar Pt. 2" "an impeccable team-up from a baddie and her baddie friend" and Colin Joyce described it as "a pillowy, pastel-hued club cut" that "represented PinkPantheress pushing at the boundaries of her ambition".
Complexs Joe Price wrote that "Ice Spice effortlessly blends into the track on the remix" and
Stereogums Tom Breihan wrote that the song "works" and that there was "something really fun about the idea of PinkPantheress and Ice Spice making music together". Spencer Kornhaber of
The Atlantic wrote that "Boy's a Liar Pt. 2" was "undeniably catchy and yet feels as fleeting as a mild dream" and that what was "most remarkable about the song" was "its featherweight feeling". Paul Simpson of
AllMusic praised the song as a "joyous dance-pop delight".
Rolling Stone,
Vulture,
The Week, and
American Songwriter considered the absence of "Boy's a Liar Pt. 2" from the nominations for the
66th Annual Grammy Awards, particularly in the
Record of the Year,
Song of the Year, and
Best New Artist (for PinkPantheress) categories, to be a snub. == Charts ==