The two stars formed a close bond earlier this year, after being handcuffed together during the first few days of entering the house.
Viewers watched Lionel and Ollie's father/son relationship develop, and it's definitely continued some two months later.
The duo had a long overdue catch-up on Thursday night (27 March) and posed for a photo, which was later posted to Instagram.
We're not sure what was making them laugh, but it must have been pretty funny judging by the grins on their faces!
Captioning the snap, Ollie said: "Hilarious lunch with honouree father @thelionelblair Xx."
Lionel, who was the third housemate to be evicted from the show, has had nothing but praise for former Made In Chelsea star Ollie. During his eviction, Lionel said: "Ollie is the nicest, sweetest guy and my wife wants to adopt him!"
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