The 27-year-old model and reality star returned to the all-star fifth MTV series hoping to find love, but after an "emotionally draining" first two episodes in Thailand, she opted to quit the villa for good.
In scenes that aired on Tuesday night (30 August), Jess admitted: "Today I've woken up feeling emotionally drained. There is such a clique in this villa. The boys just seem to bitch all the time. I'm not having fun at all."
After packing her bags, she gathered the housemates together to tell them her decision.
"Since I've been here I've been a miserable little bitch," she confessed. "I've been getting aggy and not felt myself. I am leaving. I just want to get home."
"I came in here hoping for love but all these guys wanted was a cheap shag," she added.
Jess' decision to leave EOTB 5 came after her best friend in the villa, Chloe Goodman, was unceremoniously booted from the show by Stephen Bear in episode two, after the Tablet of Terror gave him the power to eliminate any housemate of his choosing.
She was also unhappy sharing a house with Kayleigh Morris, given their past history. "Kayleigh coming here is going to massive change the villa, because I don't think I'm going to stay here much longer," she said in episode one.
Watch Jess' exit below:
When we spoke to Jess at the start of August, she told us she had no regrets about leaving EOTB early and said it was definitely the right decision for her.
Jess explained that she was sometimes prone to "bouts of anxiety" which reared up while filming the show. "I do take medication every now and then, but it hasn't happened for a while. In there, mixed with the heat, it was quite aggy in [the villa] this time and I wasn't feeling myself from the day I walked in," she said.
The star went on to say: "The production are lovely and MTV looked after us all so well, on their part, they couldn't have been more helpful with me, but when I get myself into that zone... it's so rare that it happens now.
"Unfortunately it did when I had gone out [to Thailand]. Sometimes it can be a mixture of little things, the jet lag, people arguing, me feeling uncomfortable and then I'll suddenly go into my shell... and that happened. If I'd had got there and people had chilled for a few days, I probably would have been able to pull myself out of it, but you can't, you're on Ex On The Beach."
"I really am gutted I missed the whole experience, but at the same time everything happens for a reason, and at that point, that was the right decision for me. If I'd had stayed there, I don't think I would have been happy about how I would have come across. I would have been a little hermit crab! And no one knows me for that. I like being silly and having a laugh, but I couldn't do that. I'm glad I left when I did. It was right for me at the time."
Ex On The Beach continues Tuesday at 10pm on MTV.