Frankie Sims and Jack Fincham fuelled the rumour mill last week after the pair were spotted sharing a passionate kiss on a night out.
And now it seems as though the rumours are indeed a reality as Frankie's sister Demi took to Instagram to share her love for the duo.
Frankie, 26, was spotted earlier in the night greeting Jack, 30, outside of a London venue before they joined pals. And then her 25-year-old sister Demi shared a stream of images and videos of Jack and Frankie cuddled up on her Instagram Stories.
Her first post featured the pair smooching while Frankie sat on Jack's knee. It was captioned: "They're office after 2/3 years" Demi followed the post up with another image alongside the words: "I love yous, official," while
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