Gaz had hit out at the ITV2 dating show calling it a "carbon copy" of Geordie Shore and Ex On The Beach, before slamming the Love Island couples and accusing them of putting on a showmance.
He claimed the couples only stay together because they think they will "do well" on the back of their romance, but now Olivia, who is currently dating her co-star Alex Bowen, has hit back.
She tweeted Gary directly to say: "Really @GazGShore very shallow & small minded to generalise relationships in the reality TV industry like that."
Olivia then added: "Watch & learn doll."
She also re-tweeted a fan that claimed Gaz is 'jealous' of the attention Olivia and Alex have been getting since Love Island wrapped last month. Their tweet read: "Honestly [listen] what Gaz has said about @OliviaDBuck and @ab_bowen07. Clearly 'cause he's jealous of how much attention They're getting."
Gaz hasn't yet responded to Olivia.
He had originally told The Sun: "Let them do what they want, they'll only be famous for three months. They get papped together and they're like, "We're going so well.' Everyone else is like, 'No you aren't.' They've got this delusional thought that if they stay together they'll do well, but they won't."
Really @GazGShore very shallow & small minded to generalise relationships in the reality TV industry like that. Watch & learn doll.— Olivia Buckland (@OliviaDBuck) August 9, 2016
Olivia, meanwhile, has previously slammed claims she and Alex are putting on a showmance. She exclusively told Reveal: "No way, that's bulls**t. Maybe with other couples but for me and Alex it isn't a showmance. If I wanted that I'd have gone for someone else. I love him and he's beautiful."
Her beau Alex even addressed the romance doubters recently and posted a middle finger emoji in reference to them. He tweeted: "
Since arriving back in the UK, after finishing in second place in the Love Island final, Olivia and Alex have said their relationship is "stronger than ever." And the pair have proven so by not only dropping the L-bomb to each other publicly on social media, but by moving in together too.
Alex confirmed he has moved to Essex and left his hometown of Birmingham to be with Olivia. He told fans that he was excited to start a "new chapter" with his girlfriend, while Olivia said she "couldn't be happier" to have her man living with her.
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