The couple, which has been dating since 2016, is known for keeping its romance private, but on Wednesday, April 29, Alwyn gave fans a glimpse at his life on lockdown - and inadvertently revealed he was staying with Swift.
"The Favourite" star posted a series of photos on his Instagram Stories timeline showing off a brown and white cat with distinct blue eyes - and followers were quick to recognise the feline as Swift's furry friend Benjamin.
One image featured Benjamin staring at the actor from inside a paper bag, while another showed the animal peeking out of a box. Alywn also captured a shot of the pet laying under a rug.
The 29-year-old went on to share images of sketches he had worked on during the unexpected downtime, including a couple of portraits and a drawing of a pot plant by a window, as well as an arty snap of himself taken while posing behind a glass of white wine.