Jennifer Lopez and Marc Anthony have officially been divorced since June, but in her new HBO documentary, "Dance Again," she opened up about the pain of their split.  Though the two of them have been seeing other people, the split has been very difficult for their young children, 5-year-old twins Emme and Max.  In the film, the 45-year-old mom spilled her real feelings on how it affects their children.

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"You never want to break up family," Lopez told the cameras.  "It hurts me to see them miss him so much... They miss him so much."

While Jen was on tour, she and her kids spent a lot of time together.  Marc was unable to travel to the various stops so the kids had to do their best to make it without their dad. 

Lopez's young daughter Emme showed the producers a red heart-shaped necklace she loves to wear.  She explained, "This is so I can always remember my daddy... I'm going to be with him. I want to remember him so I bought this heart."

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Though the tour was an emotional time for her, she let out her frustrations on stage.  But, when she was not on stage, the emotional trauma from the divorce got to her.  She admitted, "There's no pain or failure like going through a divorce.  That hope, that dream, that fairytale, with that first time that dream gets blown to pieces, you feel like you're going to die."

She added, "You feel like you failed. You feel like no matter how hard I tried, I couldn't make it work."

Luckily, the two have a healthy relationship to co-parent their children.  Still, no matter how famous or busy you are, divorce is extremely painful.

Check your local listing to catch a re-air of the documentary, here.

Tags: Jennifer Lopez jennifer lopez marc anthony divorce jennifer lopez dance again