Dwyane Wade is opening up on one of the most challenging times of his life ... admitting he nearly ended things with his now-wife, Gabrielle Union, after finding out he was having a child with another woman.
The Miami Heat legend -- who fathered his 9-year-old son, Xavier, with Aja Metoyer during a pause in his relationship with Union in 2013 -- broke down his mental struggles with the circumstances during his appearance on Shannon Sharpe's "Club Shay Shay" podcast this week ... saying it's something the couple still deals with to this day.