Gabrielle Union poses at The Pan African Film & Arts Festival's opening night premiere of Screen Gems' "Think Like a Man" in Los Angeles, Thursday, Feb. 9, 2012.

*Gabrielle Union, 39, is among the multitude of black Hollywood starring in the film “Think Like a Man,” based on Steve Harvey’sbest-selling relationship book, “Act Like a Lady, Think Like a Man: What Men Really Think About Love, Relationships, Intimacy, and Commitment. ”

The film focuses on four women who are following the advice laid out in the book and applying it to their own relationships. But when their significant others find out, the men attempt to use it to their advantage and give their ladies a taste of their own medicine.

Gabrielle Union as Kristen and Jerry Ferrara as Jeremy in "Think Like a Man.''

Union, whose character Kristen is romantically linked to “Entourage” star Jerry “Turtle” Ferrara, said she didn’t really pick up any tips from reading Harvey’s book, because the type of advice he gives should already be common sense for any woman.

“I think had I read the book when I was in high school or certainly in college, in my 20s, before I got married, maybe then it could’ve saved me a lot of time, money and heartbreak,” she said at a roundtable for the film. “But for me, at this point, I’ve learned a lot of tough lessons and now I kind of get it. You have to just be very clear about your wants, needs, desires, expectations, what your line in the sand is and is not.”

At 29, Gabrielle married former NBA star Chris Howard, but divorced him five years later. She is currently in a relationship with Miami Heat star Dwyane Wade, an attraction perhaps drawn from the common sense standards and expectations she came away with following her first marriage – long before Harvey’s book was even written.

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“Think Like a Man” opens nationwide on April 20. The ensemble cast also includes Michael Ealy, Jerry Ferrara, Meagan Good, Regina Hall, Kevin Hart, Taraji P. Henson, Terrence J, Jenifer Lewis, Romany Malco and Gary Owen. Watch the trailer below.