It was released for digital download and streaming by RBC Records and BMG on 23 October 2020 as the lead single from the album.

"Really Love" received positive reviews from music critics, who commonly praised David's infectious chorus and KSI's confident and energetic verses.

The winter-themed video stars the three artists, dressed in full winter gear, at a ski resort.

[2] Being a UK garage track, KSI "thought it made sense" to ask British singer-songwriter Craig David to perform the chorus.

[14][15] "Really Love" was released for digital download and streaming by RBC Records and BMG on 23 October 2020 as the lead single from KSI's upcoming second studio album.

[16] The song was accompanied by the release of a lyric video to Craig David's YouTube channel on the same day.

[17] An application that produces a hologram of KSI and David performing "Really Love" inside the user's home was released on 2 November 2020 to promote the song.

[23] "Really Love" was performed by the three artists on BBC One's Top of the Pops Christmas Special, which aired on 25 December 2020.

[26] A remix by Digital Farm Animals that features new verses by British rappers Tinie Tempah and Yxng Bane was announced and made available for pre-order on 19 November 2020 and released one day later.

[29] A remix by Moroccan-Dutch DJ and record producer R3hab that features a new verse by Jamaican rapper Sean Paul was released on 12 December 2020.

GRM Daily's Jade Dadalica called "Really Love" a "care-free and enjoyable [song] with some catchy melodies and rhythms".

Dadalica liked David's "smooth and infectious chorus" and she observed that "KSI delivers some confident and witty bars, bringing his well-known humour into his music".

"[32] GRM Daily's Courtney Wynter liked how "KSI steers away from his usual hip hop inspired sound and takes on [a] house-infused production".

[11] In their review, the staff of InCeleb called the song "uplifting" and proclaimed that it "will be known as a party anthem to dance in the club to".

[10] Rowan Faife of Reader's Digest remarked that "having Craig David on [the] song immediately turns it [into] a noughties garage track".

[37][38] The winter-themed music video stars the three artists, dressed in full winter gear, at a ski resort.

This is followed by David riding a snowmobile through the mountains and shots of the three artists inside a large ice cube.

[6][39] The staff of Sports Playlists described the music video as "a mesmerising VFX movie [that takes] fans into an icy universe".

[40] It was the second highest new entry on the UK Singles Chart, debuting at number three, becoming Craig David's 16th, KSI's 4th and Digital Farm Animals' 2nd top 10 hit.

[41][42] The song debuted at number two on the UK Dance Singles Chart and remained at that position for six weeks, being held off the top spot by Joel Corry and MNEK's track "Head & Heart" (2020).

[43] On 26 July 2024, "Really Love" was certified platinum by the British Phonographic Industry (BPI) for sales of 600,000 track-equivalent units in the UK.