While the pair, who first started seeing each other in early 2018, are yet to comment on the sad news themselves, Montana hasn't posted a picture of them together since August 2019, which she captioned: "My muse until the end of time."
The 24-year-old model, who is signed to W Model Management, last shared a shot of them together in September. Super sleuth fans knew something might be up as lots of recent comments left under the snap are asking if they're still together.
It's unclear what led to the split, but the model has spent the last few months in New York and Los Angeles for modelling jobs.
A few weeks ago Montana opened up about her difficult year after losing good friend and fellow Love Island star Mike Thalassitis.
"So this year started off very s**t, I really didn’t feel myself, I was not in a good place mentally, I felt like I’d lost myself and wasn’t quite sure what I was doing with my life and I felt very alone," she began in a message shared with her 1.3 million Instagram followers.
"I wasn’t happy with the way I looked, I felt inadequate and I felt like I was a s**t person. This has been the toughest year for me, and I’ve definitely learnt a lot of things about the way I handle things.
"I am unfortunately a person that is not good at admitting when I’m upset or sad, I try to pretend I’m fine and happy. When actually I wasn’t, I was miserable, I wanted the world to swallow me up and I got pretty good at pretending everything was fine," she said.
Montana added that she's now feeling "stronger than ever" before finishing off with a message for her followers: "So these are my wise words: spend your time trying be the best person you can be, loss will only make you more understanding and more human and appreciate and cherish the people around you as you never know when they will be gone."
Break ups are never easy, so we hope they're both doing okay.
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