Crazy in Love was certified 2× Platinum in February 2022 by the Korea Music Content Association for achieving 500,000 units sold.

On August 13, 2021, JYP Entertainment announced that Itzy would be releasing their first studio album titled Crazy in Love on September 24.

[9] "Swipe" was described as a song that "sends a warning message to the person who crosses the line" with "808 drum beats, heavy bass, and melodic rap" that "flows over the retro clarinet".

[9] "Mirror" was described as a song that "maximized its charm" with "warm message of [I am already good enough as I am]" accompanied by member's emotional vocals.

[9] Tanu I. Raj of NME found Crazy in Love "underwhelming" in comparison to Itzy's previous works.

In a three-star review she said that the album is "conceptually and logically sound in ushering in an era of maturity for [Itzy], but we can’t help but think back about the act who first made us fall in love with them with their message of empowerment.

[20] In November 2021, Crazy in Love was certified Platinum by the Korea Music Content Association for selling over 250,000 copies.

This was the group's second and highest-charting entry on the Billboard 200 after Guess Who earlier in the year and marked their first leader on the Top Album Sales chart.