The pop superstar is known for opening up about her love life in her music, with fans digging through the lyrics to hits like "We Are Never Ever Getting Back Together", and "I Knew You Were Trouble" for references to rumoured past romances with the likes of Jake Gyllenhaal and Harry Styles.
However, since meeting Joe in 2016, she says she's finally found happiness - but isn't worried she'll lose her songwriting edge.
"I think a lot of writers have the fear of stability, emotional health and happiness," Taylor tells Britain's Muic Week magazine. "Our whole careers, people make jokes about how, 'Just wait until you meet someone nice, you'll run out of stuff to write about.' "
"I was talking to (her director in the movie 'Cats') Tom Hooper about this because he said one thing his mother taught him was, 'Don't ever let people tell you that you can't make art if you're happy.' I thought that was amazing."
The 29-year-old singer appeared to pay tribute to Joe on her new album "Lover", with one track, "London Boy", referencing her love of the city and a British beau.
Taylor says she's proud of "Lover", which contained many more upbeat, positive tracks than its predecessor "Reputation", as it has proved that as a songwriter she can do more than write about heartbreak and her personal struggles.
The "Bad Blood" hitmaker adds:"Lover is important to me in so many ways, but it's so imperative for me as a human being that songwriting is not tied to my own personal misery. It's good to know that, it really is!"