The frontman of rock group The 1975 had been romantically linked to the 25-year-old musician on several occasions but insisted they have never dated.
"It's fake. It's all bloody fake. It's a farce!," he said on a radio show.
Despite admitting they "spoke occasionally", the rocker, also 25, doubts they would ever be able to have a proper relationship.
"Yeah, we met each other, we exchanged numbers in the same way that a lot of people in this kind of world do and we spoke occasionally.