They went through a high-profile split last year, but now Jennifer Lopez and Marc Anthony are getting ready to get back together again- on stage, that is.

Given the success of their Latin talent show “Q’Viva! The Chosen,” the “I Need to Know” crooner and his “On the Floor” ex are bringing a stage version of the gig to Las Vegas. And Marc and J. Lo will both join in!

It’s not called ‘show friends,’ it’s called ‘show business,’ and Jennifer Lopez told David Letterman that working with her ex-husband Marc Anthony can sometimes present a challenge.

The “On The Floor” songstress appeared on “The Late Show” to plug her new talent show “Q’Viva! The Chosen,” and she was honest about the ups and downs of collaborating with her former lover.

Relationships come and go as people seek out that special someone to spend the rest of their days with, and Hollywood certainly sees its fair share of unsuccessful tries at love.

The year of 2011 witnessed a number of high-profile marriages, though there were just as many couples who decided that it just wasn't meant to be.