"Even though I don't like Angelina, I actually agree with her right now," he says.
While it's unclear where they stand now, a preview clip from this week's new episode proved Vinny was at least on Team Angelina after he witnessed Jenni "JWoww" Farley's boyfriend Zack Carpinello "grabbing" Pivarnick during a wild night out in Las Vegas.
The morning after Zack -- in Angelina's mind -- crossed the line, Pivarnick and Guadagnino had a conversation about what transpired the night before.
"Last night was crazy," said Angelina, putting it mildly.
"I heard you fought with 24 last night," said Vinny, referring to Zack's nickname, which is also his age. "The weirdest thing is I saw you guys dancing at Drai's and he grabbed you."
Angelina was ecstatic someone else saw what happened and also thought something wasn't right. "You saw it! I saw your face! Thank god, I wasn't dreaming," she exclaimed.
"What the f— was that?" asked Vinny. "Jenni was right here grinding, you were next to him and he grabbed you like this and was touching your ass. That was weird." Added Angelina: "His hand was all over that shit, I was like stop. She didn't even see it."
After Vinny said he would never do something like that, Pivarnick expressed her reservations about Jenni's boyfriend and their relationship in general. "I don't know, I can't put my finger on the kid," she said. "In all honesty, I felt that he got too comfortable way too quick with me. I don't know what to say, it wasn’t normal. He said before he left, he was going to call me to say hi to me. I think she's moving a little too quick in my opinion."
Vinny seemed to think it would be hard to sway Jenni, who he said had "blinders" on "because she's in love."
In a confessional, Angelina said she didn't trust anything about Zack, before Vinny sounded off on the incident in a confessional of his own. "Even though I don't like Angelina, I actually agree with her right now, that that was kind of shady situation," he said. "I know that Jenni is looking through Zack-colored lenses right now, but if she finds out about this whole thing, she's gonna flip out."
We know he was right on that one, as Jenni was seen freaking out on Angelina in a tease for the rest of the season.
After last week's episode aired, Jenni took to Instagram to react in real time about the footage she had seen. "After seeing tonight's episode I'm pretty hurt," she wrote. "I feel disrespected by someone I called a friend and by someone who stated they loved me. For 5 months I was kept in the dark about this. For 5 months I was naive, probably laughed at and made into a story line that will forever haunt me."
"My heart hurts on so many levels," she added. "One thing I learned from tonight's episode is know your value. Don't ever lower your standards."
She also broke up with Zack.
"Jersey Shore: Family Vacation" airs Thursdays on MTV.