"You are beautiful and great and so sweet, the full-package type of deal... I think something great can come of it," Aaron told the runway model.
During the cocktail party preceding the season's fourth Rose Ceremony, Aaron assumed Chelsea's rose already belonged to him -- but then, in a sudden move that seemingly came out of nowhere, Ivan grabbed some white wine and pulled Chelsea aside for a chat.
At that point, Ivan was single in Paradise and had been hoping more women would arrive on the beach so he could potentially form a connection.
Aaron told his buddy James Bonsall that Ivan hadn't spoken to Chelsea prior to that day, and James accused Ivan of "rose hunting."
Aaron therefore assumed Ivan was doing whatever he could to simply "survive" in Paradise and that Ivan wasn't genuinely interested in or invested in Chelsea.
When Chelsea and Ivan sat on a daybed and talked, she immediately called them "homies," suggesting she had friend zoned him early on.
But then Ivan went in for a kiss and Chelsea definitely reciprocated on the other end, and Aaron watched angrily from a distance.
"He's such a little f-cking b-tch," Aaron complained. "I will slap that stupid beard off his face... He's a little f-cking chopstick and I'll snap him in half."
Aaron accused Ivan of lying to his face, recalling how Ivan had allegedly said he wouldn't try to take any of the women's roses away from the guys who are into them.
But Ivan insisted Chelsea had "surprised" him, which Aaron called "a b-tch move."
Ivan then got up in Aaron's face, and the men began arguing with each other.
The episode ended on a cliffhanger, with a preview of next week's Bachelor in Paradise broadcast on ABC showing the Ivan and Aaron drama continues!
"Touch me, dog!" Aaron yells in the preview that aired at the end of Paradise's September 21 episode.
"Leave!" Ivan shouts back, before Riley Christian inserts himself into the argument.
Footage then switches to night, presumably hours later, when Wells confronts Ivan on the beach.
James tells his co-stars that he heard "something happened in the hotel," referring to how the Bachelor in Paradise cast had to be evacuated from theBachelor in Paradise resort and ultimately stayed in a nearby hotel when a dangerous tropical storm hit Mexico during filming.
"Ivan, do you have anything to tell me?" Wells asks.
"Yeah, I shouldn't have gone around the system," Ivan admits. "Love makes you do, like, weird, crazy things."
Following a shot of Chelsea appearing shocked, Ivan breaks down into tears.
So what did Ivan do? Did something happen at the hotel, and did Chelsea play a role in the scandal?!
According to a September 22 blog posting by Reality Steve spoiler blogger Steve Carbone, Ivan took advantage of his off-camera time in the hotel rather than simply waiting out the storm by himself.
Carbone reported that the Bachelor in Paradise cast only had to evacuate and spend one night in a hotel. The cast reportedly returned to the resort and was able to continue dating and filming the very next day.
"However, that night is where Ivan broke protocol. While they were supposed to be sequestered or stay in their own rooms, Ivan snuck over to Alexa Caves room," Carbone claimed.
Alexa is an esthetician from Chicago, IL, who competed on The Bachelor's 24th season starring Peter Weber. Alexa only lasted a few episodes on the show's 2020 season.
Alexa was reportedly staying at the hotel because she was supposed to appear on Bachelor in Paradise in the near future.
"[Ivan] hung out with her all night," Carbone wrote. "Producers found out about it and busted them."