02/08/2012 06:03 am ET Updated Apr 09, 2012

Melissa Rivers' Boyfriend Brings Up Her Dad's Suicide During Argument On 'Joan & Melissa: Joan Knows Best?' (VIDEO)

Jason didn't think much of it when he opted to skip out on a photoshoot for "Hollywood's Happy Families" on "Joan & Melissa: Joan Knows Best?" (Tue., 9 p.m. EST on WE). He thought of it as just another photoshoot, but it meant something much more to Melissa. Joan Rivers suggested using a stand-in and Photoshopping Jason in later, but Melissa didn't like that idea. Jason thought it sounded fine, but for her it was the principle of the matter.

"We've talked about we're trying to have a baby," Melissa said to him. "We've talked about we're trying to do all these things, and then at the first opportunity you put work first."

"How about me make time away from cameras," he suggested. But things got ugly when he turned it around on her. "I can't be rational with you. You're so hormonal right now and irrational and I don't know why you're getting pissed."

The argument escalated into cursing and Jason stormed out of the house. But before he left he went for a really low blow. "I am not Mr. Rivers. I am not your f*****g father," he shouted. "I'm not gonna end up like him."

Melissa's father committed suicide, so she was shocked and horrified that he would use such a thing as a weapon against her. Later, Joan tried to talk to Jason about this, but he wouldn't have it. He did show up for their next doctor's appointment and whispered Melissa an apology. Maybe he just needed some time away from the cameras himself.

Catch new episodes of "Joan & Melissa: Joan Knows Best?" Tuesdays at 9 p.m. EST on WE.

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