"Tonight (I'm Lovin' You)" was a worldwide hit, peaking at number four on the Billboard Hot 100, making it his highest-charting single on the chart since 2010's "I Like It".

[...] Enrique's slightly processed vocals drip with confidence, and depending on which version you hear, a healthy dose of profanity as he demands some loving".

[4] Erica Y. Lopez from Fox News Latino said, "With the star power Iglesias brings to the table and a very danceable beat accompanying the track, it is conceivable that the clean version would be a hit in its own right -- but add one of the heaviest cuss words in the English language [...] it is basically club ready".

[5] The song was criticized for the "raunchiness" of the content and of the lyrics, and when MTV News caught up with Iglesias at a rehearsal for the 2010 American Music Awards, he maintained that "isn't meant to twist up any knickers, but rather is just good, kind-of clean fun.

At the end of February 2011, a new version of "Tonight (I'm Fuckin' You)" was released, with the singer Luciana featured in the beginning and the bridge, rapping and reprising the hook from Divinyls' hit "I Touch Myself".

Iglesias then lays out to meet another woman (Natalia Obradovicova) in Mexico and the pair have sex in a hotel room.

The next scene shows several women writhing provocatively on a bed, all attracted to Enrique (this does not happen in the clean version).

The entertainment portal DesiHits said that "all of Enrique's videos have been hot, but 'Tonight (I'm Lovin' You)' takes the crown as it is quite a provocative clip.

"[18] Jocelyn Vena from MTV explained "Iglesias has noted that when he sat down to record the song about being straightforward with a lady about his intentions to bed her, he didn’t want to sound 'arrogant'.