Name the Justin Bieber song: "It's a big big world (world). It's easy to get lost in it."

Explanation

"Up" is a song by Justin Bieber. The song was included on his second album, My World 2.0. The songs lyrics have made Bieber realize love makes him invulnerable as he sings about how a relationship can only get better, with exaggerated lines such as, "We'll take it to the sky/Past the moon/Through the galaxies."