In the wake of pop star Rihanna's alleged beating by singer boyfriend Chris Brown, Tyra Banks is devoting an episode of her talk show to the issue of teen dating abuse.

It's a subject close to her heart. In the segment airing Thursday on "The Tyra Banks Show," the super model shares her experience dating a man who emotionally abused her. Banks says the man chipped away at her, trying to break her down so he could be in control. One day, she woke up and decided to end the relationship because "when you're done, you know you're done."

Banks will be a guest on the live Thursday edition of "The Oprah Winfrey Show," which Winfrey has dedicated to dating violence in response to the alleged assault of Rihanna.

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