The former couple, who dated on and off for nine months in 2011, were pictured passionately kissing outside Essex nightclub the Sugar Hut, which is owned by Kirk's dad Mick.
Lauren and Kirk have been inseparable since she split from her co-star Lewis Bloor during a TOWIE Ibiza special in September.
Last month Lauren posted a selfie of the pair together after Kirk, who was one of the original TOWIE cast members, turned up her flat on her 32nd birthday with designer gifts.
"He came bearing birthday gifts in the form of Stella McCartney #FriendsReunited." she wrote.
The pair have since shared several loved-up pictures of themselves on Instagram, but remained coy about the status of their relationship.
This isn't the first time Lauren and Kirk have reunited. They briefly got back together in 2013 and Lauren even suffered a pregnancy scare, but it didn't last and Kirk left TOWIE for the second time soon after.
Let's hope things work out for them this time round.
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