According to US Weekly, the tune is all about their relationship.
"It tells the whole story about how he broke up with her, she begged him to take her back, and then he decided he was done for good," a source explains. "This is his answer to Selena."
The lyrics are telling of what happened and how the teen superstar is feeling at the moment.
"Gave you everything / Everything I had to give / Girl, why would you push me away / Lost in confusion / Like an illusion / You know I'm used to making your day / That's in the past now / We didn't last now / Guess that this is meant to be / Tell me was it worth it / We were so perfect / Baby, I just want you to see."
"Nothing Like Us" is one of three new tracks featured on his Believe Acoustic album which is due out Tuesday, Jan. 29.
What do you think of the words to Justin's new song? Are you going to buy the album tomorrow? Tell us @OKMagazine!