Kevin Hunter Blames Wendy Williams for Ruining Relationship with Son

Wendy Williams has put a wall up between her son and his father ... so claims Kevin Hunter Sr., who fears the fight that led to Kevin Jr.'s arrest has solidified the wall with indestructible mortar.

Sources with direct knowledge of the divorce say Wendy's estranged husband has been vocal, accusing Wendy of poisoning his relationship with their son, getting in his ear and talking smack about him ... at least that's what he's been saying.

We're told Kevin Sr. has made several attempts in recent weeks to spend time with his son to repair the relationship, but he got the cold shoulder. He's also sent his boy lengthy texts ... only to get one-word replies.

Our sources say before Wendy filed for divorce, the Kevins were super tight ... so Sr. claims the trigger for the change has to be Wendy. Of course, the marriage fell apart because Kevin apparently had a child out of wedlock with another woman. He says he's admitted his wrongdoing but feels Wendy's feelings have been transferred to Jr.

We broke the story ... Wendy's son was arrested for assault after he got into an altercation with his dad in a New Jersey parking lot and allegedly punched him in the nose after Sr. put Jr. in a headlock.

We're told the fight erupted over an argument involving Kevin Sr.'s demand for spousal support. They also beefed over Sr.'s claim Wendy was sabotaging his relationship with Jr.