It was reported in June that the 'Writer' singer had been dating the Radio 1 DJ for two months.
"Greg has incredible passion for music and he is very intelligent and switched on," she told The Sun.
"And he's beautiful. I have a lot of girls saying, 'Oh, you b**ch!'."
The 23-year-old continued: "Greg just really makes me laugh. It's medicine.
"I have been invited to all sorts of red carpet events and now we are a couple it is happening even more."
However, she confessed that she is not always in the mood for attending events.
"It's not really for me but I do like getting dressed up and putting all the make-up on. I just can't be arsed with it all the time," she said. "I'm much more comfortable in my jogging gear."
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