First Love

This upbeat, bass-heavy cut finds Jennifer Lopez paying tribute to her beau: I wish you were my first love 'Cause if you were first, baby There wouldn't have been no second, third or fourth love Many of J-Lo's fans suspect the lyrics are directed to her former backup dancer Casper Smart, whom she had been in a relationship with since October 2011. The pair split shortly after the single's release.

The song was produced and co-written by Swedish hitmaker Max Martin, who previously created such hit tunes as "…Baby One More Time," "We Are Never Ever Getting Back Together" and "Roar." "Max Martin [is a] genius, man," Lopez said during a listening party, "He's a super producer, maker of great pop hits. I've always wanted to work with him but our paths [hadn't] crossed. I sought him out."

The song was also co-written by Cory Rooney, the co-writer and co-producer of Lopez' #1 hits "Ain't It Funny," "I'm Real" and "If You Had My Love."