Dwyane Wade Fathers Baby Boy

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NBA star Dwyane Wade recently spent time with his new baby boy he fathered with a woman while on a break with now-fiancée Gabrielle Union, a source close to the couple tells ET.

Wade, 31, and Union, 41, who were officially engaged last week, have worked through the issue privately as a couple, and the Bring It On star was aware of the child before their engagement. Wade has known the mother of his youngest son, Aja Metoyer, "for many years."

According to the birth certificate, obtained by ET, Wade and Metoyer have named the child, who was born on November 10, Xavier Zechariah Wade.

Pics: Star Sightings

The long-time couple, who have been dating since 2009, are still very much committed to spending their lives together, and according to the Miami Heat star last week, a September wedding is likely.

Related: Gabrielle Union and Dwyane Wade Engaged!

A committed father, Wade has full custody of his two sons after a contentious custody battle with his ex-wife Siohvaughn Funches, and is also raising his nephew. He has made no secret that being a father is the most important role in his life, participating in President Obama's Fatherhood Task Force and becoming a New York Times bestselling author for his book A Father First: How My Life Became Bigger than Basketball.

According to the source, Wade has never taken his fatherhood responsibility lightly and has no intention to do so now.

Related: 5 Things You Don't Know About Gabrielle Union

Click here for a behind-the-scenes look at the Wade-Union holiday photo shoot the two recently did with his two oldest sons Zaire and Zion.