For starters, your source from Reddit is being quoted by publications such as In Touch Weekly and the Daily Mail. Both news publications have been ridiculed for producing fake news that relies on clickbait and the drama of celebrity lives.
The Guardian reported that “Microsoft’s internet browser is warning users not to trust the Daily Mail’s journalism as part of a feature designed to fight fake news.” So, they aren’t credible. We won’t know the ins and outs of the Bieber’s relationship unless they tell the public.
On March 1st, Justin’s 30th birthday, Hailey pinned a heartfelt message to her husband on Instagram, calling him the “love of [her] life.” From what they have put out themselves, the couple seems to be in love and happy.
https://www.instagram.com/p/C3_fBF5tfQl/?utm_source=ig_web_copy_link
https://amp.theguardian.com/media/2019/jan/23/dont-trust-daily-mail-website-microsoft-browser-warns-users