The two announced that they were engaged in June, after dating for a month.
However, TMZ has now claimed that the two have chosen to end their relationship.
HuffPost UK has reached out to representatives for both Ariana and Pete for further comment.
Since getting together, the couple have been very public with their relationship, sharing updates on everything from moving in together to the adoption of their pet pig on social media.
The singer is going through a particularly tough time at the moment, recently confirming she was taking time out from the spotlight to work on new music privately, following the death of her ex-boyfriend Mac Miller.
Her spokesperson said: “Given the events of the past couple of years, Ariana is going to take some much needed time to heal and mend.
“She will be staying close to home and using this period to spend time with her loved ones and work on new music without deadline. She thanks her fans for their understanding.”
In the lead-up to the release of ‘Sweetener’ earlier this year, Ariana also spoke of the anxiety and post-traumatic stress disorder she’s experienced since the terror attack at her show in Manchester last year, which took the lives of 22 people.
This was also something she addressed on her latest album, most notably on tracks like ‘Breathin’ and ‘Get Well Soon’.