She split with movie heart-throb Tom Hiddleston after a whirlwind romance with The Night Manager actor last summer.
But now that drought is over, and here we are again.
A source has also said they're the "real deal" and they've actually known each other for yonks. The Grammy-winning singer is supposedly renting a house in North London while she has been seeing the actor, who apparently lives nearby with his parents.
The paper also claims that Taylor has been shuffling around London "using disguises, like scarves and hats" and that pretty much all of their family and friends know. Alwynswift. I dunno, it looks like a picturesque Welsh town instead of a celebrity relationship portmanteau.
"This isn't a new couple alert or a secret relationship - the only people this has been a secret to is the media", another source told the same publication. She dated Thor star Tom Hiddleston for four months from June to September 2016; Scottish DJ and music producer Calvin Harris from March 2015 to June 2016, and singer Harry Styles from December 2012 to January 2013.
This news comes as a total shock to Swifties who believed their idol had gone off the grid to write and record her next album.
She's even been hitting the streets of the United Kingdom capital in disguise so she can enjoy dates with Joe.
According to British newspaper The Sun, which first reported the story, the relationship has been going on for months. According to The Sun, the Bad Blood hitmaker disguises during outing with Alwyn in his hometown of London. In addition, he is set to portray the love interest of Swift's longtime pal Emma Stone in the upcoming period drama The Favourite. The sexy actor broke onto the Hollywood scene previous year when he played the title role in Billy Lynn's Long Halftime Walk. Taylor's failed relationships are reportedly one of the few reasons why she is keeping her romance with Joe a secret and that the new couple decided early on to keep their relationship private.