In fact, the young couple seemed perhaps more invested in each other than the main man himself up on stage as they passionately made out while enjoying his set.
Sharing a photo of their kiss, which saw Stranger Things star Millie throw her arms around Jake – son of rock royalty Jon Bon Jovi – as he leaned over her for a smooch at the front of their box, with their matching blonde heads together.
‘Alexa play love of my life by harry styles,’ 18-year-old Millie captioned the post, swooning over her 20-year-old boyfriend.
The pair then showed their appreciation for said track, Love of My Life, off the singer’s new album Harry’s House, as Millie shared a short clip of her and Jake swaying as they sang along enthusiastically to camera.
Millie and Jake have been dating for over a year, with the actress first introducing him to her Instagram followers in June 2021, before going ‘Instagram official’ in November with a snap of Jake kissing her while on the London Eye.
Since then, they have made their red carpet debut as a couple at the Baftas and the Syracuse University student also accompanied her to the Stranger Things season four premiere.
Millie’s co-star Noah Schnapp was also with the couple for Harry’s gig, with the Enola Holmes star sharing a snap of him in a pink cowboy hat, seemingly emotional, as she branded him a ‘big Harry fan’.
Noah posted a picture of himself posing with Jake and a pink feather boa to Instagram, while Jake’s photos showed off more of their swanky hospitality box.
Former One Direction star Harry, 28, also helped a fan come out to the entire stadium during the show, with the singer congratulating Matteo from Italy on being a ‘free man’.
Meanwhile, it’s been rumoured that Millie is in talks with Disney for a part in an upcoming Star Wars project that could net her a pay day of around $15m (£12.2m).
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