Their romance has gone from strength since sparks first flew back in May 2017.
And Taylor Swift was every inch the supportive girlfriend on Monday night as she slipped into the Mary Queen of Scots London premiere to support actor beau Joe Alwyn.
The Bad Blood hitmaker, 28, is said to have slipped in through a side door of Cineworld Leicester Square to avoid the red carpet, with her cover rumbled when a movie co-star shared a photo of her at the after-party.
Scottish actress Izuka Hoyle, who plays courtier Mary Seton, shared a snap of herself chatting to the songstress on Instagram.
The Look What You Made Me Do singer looked sensational in a black lacy gown with a berry lip as she chatted to famous friends.
A source told The Sun a modest Taylor wanted the focus to be on her British boyfriend, 27, on the night.
They said: ‘Taylor didn’t want to draw attention to herself because it was really Joe’s night.