Things got very heated between Jake Pavelka and ex-fiancee Vienna Girardi when they reunited for the first time since announcing their split at a two-hour ABC taping Thursday.

The two arrived separately at an undisclosed location to film the segment, set to air during The Bachelorette July 5, to discuss their highly publicized split.

Though Internet reports claim Pavelka, 32, raised a fist at Girardi, 24, an insider tells "It did not happen. He was calm and collected."

In a statement, a Bachelor show rep tells Us: “Former The Bachelor participants Jake and Vienna taped an interview last night. As this was the first time the two had seen one another since their recent breakup, the atmosphere was emotionally charged. However, and contrary to reports that have surfaced about the interview, at no time was anyone ever physically in harm’s way, nor was anyone ever threatened with physical violence.”

At one point -- after Girardi kept continually cutting him off -- Pavelka stood up. But the insider says he simply asked, "Will you just let me finish?"

"He couldn't get a word out -- it was very reflective of their relationship," says the source, who adds that host Chris Harrison often had to tell Girardi, "Vienna, let him talk."

"Vienna was on the defense," the source tells Us. "She was trying to play victim."

She ended up storming off the set in tears.

"Jake has lost all respect for her," the source tells Us. "She crossed the line when she sold their relationship to Star."

The blow-up Thursday only reaffirmed that they made the right decision to call it quits, says the insider.

Adds the source, "They couldn’t even have an adult conversation while a mediator was there with them."