"Love Slayer" was released as a promotional single for the album, reaching the top ten of the Dance Club Songs chart.

[13] Even though they split, the two continued to tour together until Lovato left due to personal struggles with substance abuse and self-harm.

[24] During early recording sessions for Fastlife, Joe worked extensively with Robert Coppola Schwartzman on multiple songs, though none of them were released.

[28] Jonas described the early stages of the album as having a Michael Bublé sound, and revealed that two of the original songs were reworked into the finished product.

[31] Rob Knox worked with Jonas on three songs for the record, including the album's lead single "See No More" and the title track.

He also recorded a song titled "Body Language", which had a Latin feel and lyrically spoke of loving a girl who doesn't speak English.

[31] Following the release of "Just in Love", rapper Lil Wayne reached out to Jonas to record a verse for a remix of the song.

On the collaboration, Jonas said "He just jumped on the record, and it's just super awesome to see that somebody like him would wanna support me [...] It means the world to me, and I love his rap, it's so dope.

[48] Idolator wrote that the fourth song, "Love Slayer", featured "pulsating club beats, [an] array of catchy hooks and [an] anthemic chorus.

[59][60] The new release date coincided with Jonas' appearance as the opening act for various European shows on Britney Spears' worldwide Femme Fatale Tour (2011).

[66] Fastlife received a Parental Advisory label, affixed from the Recording Industry Association of America (RIAA) to identify explicit content.

[67][68] The album earned the label due to Lil Wayne's explicit rap on the remix of "Just in Love", which features the words "bitch" and "fucking".

"[41] Jonas posted a virtual puzzle on his official website in August that allowed fans to attempt to put together the cover art for the album.

[71] It features a close-up shot of Jonas in a black leather jacket, while the background consists of a blend of red, orange, and yellow lighting that has a "blurry, going-under-sedation" feel.

[72] The Hollywood Reporter wrote that the cover "shows a well-dressed Jonas staring deeply into the camera, with a bright background.

Sendra perceived that Jonas "injected some personality" into the record, writing "Joe and his team of writers and producers put a lot of care into the sound of the record, making sure the uptempo tracks really have punch, the ballads have some grit, and the mid-tempo grooves have a believable amount of soul...Most importantly, a large part of the album is made up of songs with big melodic and rhythmic hooks that will propel you onto the dance-floor or have you singing along.

"[79] Slant Magazine's Jonathan Keefe wrote a favorable review, commenting that "Jonas certainly can't match someone like Timberlake in terms of a defined aesthetic or presence, but at least he and his team had the smarts to enlist producers who know how to construct solid pop songs.

"[78] Jody Rosen of Rolling Stone gave the album two out of five stars, calling Jonas' vocal performance "a flop" explaining "He sounds strained, simpering – like one of those High School Musical Disney kids trying to sing R&B.

Yet like his bro, Joe has solid if not spectacular vocal talent and a penchant for producing catchy tunes with plenty of radio appeal.

"[84] Pop Culture Online described the release as "a good album and Joe Jonas deserves recognition for his effort to appeal to a more mature audience.

The young Jonas has good vocal tones a will surely go on to receive more radio air play and perhaps remixes in clubs.

[102] Julianne Escobedo Shepherd with Billboard wrote "Transforming a charmed teenhood career into a viable adult one is possibly one of the entertainment industry's most difficult feats.

Conversely, earlier this week Justin Bieber successfully engaged his 13.5 million Twitter followers to help him score his first ever [number one] single on iTunes with his new Christmas song titled Mistletoe (2011).

"[105] Popcrush likened the album's failure to releases from JC Chasez and Jordan Knight, both of which attempted and failed to gain solo careers after having previously been in highly successful bands.

[127] The second and third-place winners also received cash, and were featured on the Cambio official website; ten honorable mentions won a copy of Fastlife upon its release later that year.

"[133] Popcrush stated "With his Mediterranean good looks and sharp grey suit, which he paired with sneakers, Jonas sang and danced his way into many teenage hearts.

"[140] Neon Limelight wrote "Impressing the crowd with his choreographed new moves, Joe came ready to shut the place down, and while he may not have done quite what he intended with his set, he definitely served up an E for effort.

Joe was the opening act for pop singer Britney Spears on ten European dates for her Femme Fatale Tour (2011).

[146] Upon returning to the United States, Jonas appeared on The Tonight Show with Jay Leno on November 3, performing "Just in Love".

[148] On the performance, Popcrush wrote "Jonas and his band delivered a lively version of the track, with electric guitar flourishes and a slower intro section added to the arrangement.