The vibe I get is that she was the one who initiated the breakup because she was excited to start a life in London and wanted to be single to do that. Doesn’t mean she wasn’t upset about it, but the way she said it in her video made it seem like it was her idea.
During the live with Flossie I mentioned, she got a text from a boy and started freaking out and got up and pretended to throw her phone of the balcony etc., and Lewys and Flossie were asking for her phone saying don’t reply, we don’t talk to him anymore etc. She said it ruined her night and put her in a bad mood and they said to ignore it. Flossie said it wasn’t John that had texted her because everyone was commenting that. A lot of people were commenting Spencer and saying they ship them, and none of them said it wasn’t him... someone commented later “thoughts on Spencer” and Flossie was being sarcastic saying he’s a lovely boy and amazing etc. Long story short, I think Olivia was living the single life/talking to Spencer so I don’t blame John for moving on/being on Tinder. He must have been heartbroken knowing Olivia was moving on herself. So I’m not surprised they didn’t get back together and don’t seem to be on friendly terms anymore. But of course no one knows the truth except them.