Friends believe that buying a home is a sign of how solid the relationship is.
An insider said: "This is just another sign of how close they are. She is the happiest she has ever been."
Meanwhile, Taylor's friends have already revealed that the star is completely struck by her actor.
A source said: "Taylor was really lucky to meet Joe, and she's the first to say it. Joe is truly one of a kind.
"Keeping it private from the beginning. They were able to know each other in peace.
"Joe has no interest in becoming a celebrity. Their personalities are very compatible and respectful of each other's careers."
Taylor and Joe have become public with their love story in 2017 after several months of private meetings.