They are rarely seen apart since starting their relationship last year.
So Louis Tomlinson naturally brought his American actress girlfriend Danielle Campbell as his guest to the star-studded Pride of Britain Awards in London on Monday night.
The 24-year-old One Direction hunk shed his usual rugged indie style for a slick grey suit while his stunning girlfriend, 21, dazzled in a chic black gown with a shaggy plum-coloured stole.
Louis injected some boy band cool into proceedings on the night as he cut a sharp figure in his perfectly tailored grey suit adorned with a fine check.
Determined to add a unique touch to his look, the Doncaster-born hunk rocked a cool black tie with fine white piping layered over his crisp dress shirt.
His long hair was worn in an impressive staggering quiff, which appeared to defy gravity in its super high height – no doubt fixed with masses of product.
Ensuring she was not outshone by her international heartthrob beau, Danielle wowed in her stunning black gown which provided a sophisticated look.
The Disney star, who found fame playing Jessica Olson in 2010 movie Starstruck, showed off her physique subtly in the high-necked, form-fitting gown.
Providing a touch of old school Hollywood glamour, she draped a burgundy stole over her shoulder in a chic addition to the look.
Her brunette tresses were pulled to one side while she sported a pair of dazzling earrings to coordinate with her boxy gold clutch bag.
Louis and Danielle’s relationship is something of a modern family as he is father to baby son Freddie who he co-parents in the US with ex Briana Jungwirth.
Danielle previously praised boyfriend Louis and Briana when speaking to ET Online at Variety’s Power of Young Hollywood event.
When asked about baby Freddie, she said: ‘I think Louis and Briana have done a great job in raising him, and he’s one of the most special little boys, so they’ve done a great job – he’s stunning. He’s got beautiful parents. I have so much respect for Briana for everything that’s she’s doing. I think she’s a wonderful mother.’
However, she stopped short of saying she’d also like children of her own at such a young age.
She said: ‘I think right now (Louis and I are) young and we’re enjoying each other’s company,’ she added. ‘He’s been so good to me, and I care about him a lot.’