The eyewear designer and Natalie have been in a relationship for more than two years, however they have decided to separate and spend some time apart.
Hugo has, however, insisted that he and Natalie continue to love each other "unconditionally".
Confirming the break-up to the Mirror, Hugo said: "Natalie and I love each other unconditionally and are taking some time apart to concentrate on our own lives and careers."
Natalie, who is a model, first appeared on our screens as Hugo's new girlfriend in the third series of Made In Chelsea in late 2011. Hugo and Natalie later quit the show and they continued to see each other romantically.
In November, Natalie flew out to Australia to support Hugo during his stint on I'm A Celebrity...Get Me Out Of Here! and the pair bought a house together soon after.
Last summer, Natalie admitted in an interview that Hugo was keen to get married, adding that she had been looking at engagement rings.
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