Surely this confirms it! Demi Lovato holds hands with rumoured MMA fighter beau Luke Rockhold as they arrive to UFC 205 in New York

By Ross Mcdonagh For Dailymail.com

Published: 02:24 EST, 13 November 2016 | Updated: 11:28 EST, 13 November 2016

It's been the worst kept celebrity couple secret for a while now.

And on Saturday night Demi Lovato finally confirmed her her relationship with MMA fighter Luke Rockhold.

The duo arrived hand in hand for the historic UFC 205 at Madison Square Garden.

It's official then! Demi Lovato confirmed her romance with MMA fighter Luke Rockhold as they arrive to UFC 205 in NY hand in hand on Saturday night

The 24-year-old look scintillating in an LBD, which she matched with a pair of high-heel pumps.

Over her shoulders she slung a black blazer, almost the exact same one as her towering beau.

Luke - who obviously wasn't fighting on the spectacular card - looked razor sharp in his tuxedo jacket over a white button-down shirt.

While he opted against a tie or dickie bow, he did pull off an impressive finish with a white napkin in his breast pocket. 

Hot damn: The 24-year-old look scintillating in an LBD, which she matched with a pair of high-heel pumps

Night off: Luke - who obviously wasn't fighting on the spectacular card - looked razor sharp in his tuxedo jacket over a white button-down shirt

While there was a tantalisingly stacked card of amazing fights lined up on the night - including three title fights - Luke will have a very close eye on the Middleweight bout between Yoel Romero and Chris Weidman.

Weidman was the man Rockhold defeated last December to claim the title, only to go and lose it on his first defence to Britain's Michael Bisping.

Demi and Luke were first linked back in August and had reportedly started dating after Demi's split from Wilmer Valderrama back in June.

The couple dated on and off for six years. 

Demi and Luke both sport matching tattoos already, smiley faces on their fingers, which they revealed on their Instagram accounts.

Demi and Luke were first linked back in August and had reportedly started dating after Demi's split from Wilmer Valderrama back in June (pictured at the LA Rams game earlier this week

Tat's serious: Demi and Luke were first linked in August and both sport matching tattoos already, smiley faces on their fingers

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