It was written and composed by Planet VI, brothers Theron and Timothy Thomas, along with Brian Kennedy for her eponymous debut album, released in 2008.

Production on the song was handled by the latter and Harvey Mason, Jr. Musically, it is a midtempo contemporary R&B ballad with pop elements, built along on a piano and electric guitar sounds.

Upon release, "If This Isn't Love" was met with generally positive reviews from contemporary critics who praised the song's structure and its modern interpretation for an adult audience.

[1][2] Andy Kellman from Allmusic stated that "Hudson's voice is smoothed out through the fluttery "If This Isn't Love" (not to mention spiked with grating male grunts of "Hey!

"[3] Slant Magazine said that " 'If This Isn't Love' succeeds at sounding completely modern without eschewing the standard adult-contemporary song structure that's tailor-made for pipes like Hudson's.

Combining modish beats with a cool, breezy chorus, 'If This Isn't Love' may not be in the same league as recent power ballads from Beyoncé and Leona, but it has an understated charm that's hard to quibble with.