Directed by Nick Bartlett, the clip sees the pair break into London's Waldorf Hotel, where they are then chased by security, reported Digital Spy.
The 23-year-old singer began dating model Cheshire four years ago.
He recently said that the couple were too young to consider marriage, adding that they were both "very career driven at the moment".
The ballad is the third single released from Lott's self-titled third album, which reached number 15 when it was released in August.
Lott is one of the 15 celebrities competing in the new series of 'Strictly Come Dancing'.
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