We thought baby mama Jen Harley had made an honest man out of Jersey Shore star Ronnie Ortiz-Magro, but MTV's Jersey Shore Family Vacation has us thinking twice. Did Ronnie cheat on his girlfriend while he was away? It certainly seems so, based on the evidence below. Then again, it might all have been a showmance. Read on, fans…

What happened between Ronnie and Antonia?

As we've seen on the show and in promos, Ronnie meets a French woman named Antonia out at the club, and the two get to talking. He tells The Situation he's "just trying to be polite," but it's not long before Ronnie grinding on her. "A girl without a bra in a see-through shirt is not a bad situation," he tells us viewers.

"Ronnie is full-tilt right now," Vinny Guadagnino observes. "He is a wrecking ball. If Ronnie gets any closer to this girl, he's about to have a second baby mama." (Or, as Paul "Pauly D" DelVecchio says, "Single Ronnie is in the building.")

Then we see Ronnie bring Antonia home, telling her, "You're beautiful. You're gorgeous. You're going to get me into a lot of trouble." Then he takes her into a bedroom and locks the door behind them. And then we see him sobbing on the toilet, moaning, "I'm a bad guy."

Did Ronnie actually cheat on Jen with Antonia?

"You'll see how it plays out throughout the season," the 32-year-old told ET in a red carpet interview uploaded on March 30. "I put myself in certain situations — no pun intended — but it's how you come out of the situations. It's what you do at the end."

ronnie and jen harley

How much does Jen know?

Ronnie also claimed he told Jen "everything that has happened" during the Seaside Heights gang's vacay. "You know, there's nothing that has happened that I [regret]," he said. "S–t happens. But at the end, you know what's up and what's really important."

Are Ronnie and Jen still together?

We know Ronnie and Jen just welcomed daughter Ariana Sky together, but it's hard to say if they're still an item. Jen just recently posted videos on her Instagram story of Ronnie kissing Ariana's head, but since then, it looks like several photos of the couple have been taken down, which is pretty telling.

Was it just a showmance?

The Antonia affair might just be a ratings ploy, as Ronnie told ET. "It's like, you do certain things that you know are going to get ratings, you know that people are going to watch, you know that people are going to be interested in. Like, that's what I had to do."

So the jury's still out! We're sure the truth will be revealed, however, as Jersey Shore Family Vacation Season 1 continues on Thursdays at 8 p.m. ET on MTV.