Wade, who spent 13 seasons with the Heat before joining his hometown Bulls on a two-year deal worth an estimated $47 million, returns to Miami on Tuesday night to face the Heat for the first time since his departure.
"I think you guys know, I haven't talked to him," Wade told reporters on Wednesday.
Riley previously said he was "floored" by Wade's decision to leave Miami, where he won three championships and earned a reputation as one of the NBA's elite guards.
There were reports of tension between Wade and Riley leading up to his decision to leave Miami when the Heat did not match the Bulls' contract offer over the summer. Riley took responsibility for that and said he wished he was more involved in the contract negotiations.
Wade maintains that, despite his exit, he doesn't hold anything against Riley, who returned to the sidelines to coach Wade and the Heat from 2005 to 2008 after stepping away. The Heat won their first championship in 2005-06, and Wade was named the NBA Finals MVP.
"I think I've been very open and honest about my respect and love with Pat," Wade said. "I've been honest that I haven't spoken to him since the season ended."
A 12-time All-Star, the now 34-year-old Wade is averaging 17.9 points, 4.0 rebounds, 2.9 assists and 1.9 steals in eight games with the Bulls (4-4) this season.
Without Wade, the Heat (2-4) has predictably struggled.