The two CBB finalists enjoyed a night out along with Ollie's best friend and Made In Chelsea star Cheska Hull.
Cheska, Ollie and Casey stuffed their faces at The Big Easy American diner in London while catching up.
Posting a photo of the pair before they tucked into some lobsters, Cheska said: "LOVE these two! @planetolliewood @caseybatchelorglamour xxx."
Ollie and Casey joked around for the photo, pulling funny faces while wearing plastic lobster bibs.
The pair became close while they were in the CBB house last month, with Ollie often being a shoulder to cry on while Casey was embroiled in the love triangle drama between Lee Ryan and Jasmine Waltz.
Cheska later added: "Such fun last night with @planetolliewood @caseybatchelor xx."
It also appeared to be a Made In Chelsea reunion too, as Cheska and Ollie bumped into former co-star Richard Dinan.
Entrepreneur Richard was famously involved in drama with Cheska during series three of the E4 reality show, while he was dating Kimberley Garner.
After many fallouts, Cheska and Richard eventually made up and were back to being friends again. Richard said last night: "Very nice to see @ollielocke for dinner last night and meet the lovely @CaseyBatchelor too."
Richard last appeared in the fifth series of MIC, while Ollie announced his decision to quit the show in August last year.
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