Fans watched Hawley and Holly hit it off, after she surprised her former flame Stephen Bear on the beach. On their whisky tasting date, the pair got up very close and personal, with Hawley licking a shot off of Holly's inner thigh and locking lips with her.
Pictures of the pair were sent back to the villa and Jem majorly lost her cool. She lashed out at Holly, before throwing a drink over Hawley. Since her reaction aired onscreen, Jem has received a slight backlash from viewers for her behaviour, with some calling her a "hypocrite."
Fans will know that Jem has already slept with Gaz Beadle (they got together on their first night in the villa) and she recently confessed to Hawley that she had slept with his best friend Scotty T to spite him.
Prior to Hawley and Holly arriving back at the villa after their date, Jem had also been seen kissing Jordan Davies - but she has stressed their smooch was just part of a game.
Taking to Snapchat, Jem defended her actions and explained that she had been left hurt by Hawley. She claims he cheated on her with Charlotte Crosby, but Hawley, meanwhile, has denied this.
Jem told followers: "I just want to make a few things clear... this is the only way I can get my point across. People have asked, 'Why would I get with my ex's best mate if I still loved him and wanted to get back with him?' My ex-boyfriend brought back Charlotte Crosby to his house while I was still in his bed as his girlfriend, and then then he left me for her.
"As any girlfriend would be, angry, hurt and upset, the first thing I could think of doing was get with his best mate when I was drunk, so I did. Months later I see [Hawley] on Ex On The Beach and decide that I do still love him and want him back, so I tell him about the Scott thing and hope by being honest we could take a step forward, but he then decides to get revenge."
Jem continued: "While he's trying to get revenge am I going to sit there like a mug? No I'm not. Everything he is doing on Ex On The Beach is in my face and I'm watching it, therefore I'm going to react the way I am. It hurts."
She then addressed claims she is a "hypocrite" and denied there is one rule for Hawley, and another for her.
"No. I've done nothing in front of him or in his face, or sent pictures like he has done to me," Jem said. Addressing her kiss with Jordan, she said: "That was a game of spin the bottle. That's how you play it."
She added: "I didn't want to see my ex-boyfriend getting with someone, so I tried to prevent it as much as possible, simple as that. Anyway, I'm over him, I couldn't give a f**k about him anymore. I wouldn't do anything to spite him anymore because I do not care.
"There's a huge difference doing something in front of someone's face... And the whole Gaz thing, Hawley wasn't there when I shagged Gaz. I didn't even know Hawley was on the same island as me... different story."
Hawley, meanwhile, hasn't responded to Jem's Snapchat, but viewers did see him confront Jem for kicking off at Holly during Ex On The Beach's third episode.
He said: "All I've had since I've been here is f**king aggro from you. I've been out and actually enjoyed myself and you're kicking off like that. I think you've got issues Jemma."
The morning after her fallout with Holly and Hawley, Jem described her night as the "worst night ever" and admitted she was "struggling" being around her ex.
She said: "Last night was probably one of the worst nights I've had because Hawley got with somebody. One minute I f**king hate him and then the next minute, I look at him and I'm like I f**king love you. He's my ex and I still think of him as my boyfriend and he's f**king with Holly. I'm really struggling."
Ex On The Beach continues Tuesday 6 September at 10pm on MTV.
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