[6] The single became Lizzo's first commercial hit, entering component R&B charts in the United States, while also reaching the top twenty in Scotland.

[18] Reviewing the album for AllMusic, Heather Phares praised Cuz I Love You as "a triumphant showcase for every part of Lizzo's talent, physicality and sexuality.

"[19] Jumi Akinfenwa of Clash stated that by "Offering up a mix of pop, hip-hop, R&B and a sprinkling of trap and neo soul for good measure, Lizzo covers all bases and serves the perfect introduction to her world for mainstream audiences.

"[1] DIY magazine's Rachel Finn gave a positive evaluation of the album, writing that "Lizzo's vibrant personality and humour shining through a set of tracks that switches through elements of funk, pop and R&B with ease.

"[29] In an article for NME, reviewer Natty Kasambala described the album as being "as flawlessly genre-spanning as Lizzo herself: pop at its core, but with constant references to her jazz roots and historical love of twerking.

"[24] Claire Biddles at The Line of Best Fit shared similar sentiments, calling the album "Charming, addictive and seemingly effortless, Cuz I Love You is Lizzo's declaration of superstardom.

"[30] Slant Magazine's Zachary Hoskins concluded that "Lizzo's talent has always been evident, but this album's material, her strongest to date, allows her put it on full display.

In a review for The Guardian, Alexis Petridis felt that "Lizzo has something to say, and a smart way of saying it ... but the potency of what's here would seem more potent still if it had been allowed a little room to breathe ...

"[22] Rawiya Kameir was also critical in the review for Pitchfork, claiming that "Despite her obvious skill and charisma, some of the album's 11 songs are burdened with overwrought production, awkward turns of phrase, and ham-handed rapping.