I wondered whether him winning his fight might work in her favour - I don’t understand the ins and outs of how great a win it was, but nevertheless it was a win. Thought as an aside I was amazed with all the theatrics and postering- felt much more like wrestling than boxing.
But I think it would have been difficult to part if he has lost - would have left her vulnerable to all types of accusations of dumping him/using him etc. If they wish now they can just pursue the grown apart , leading different lives now, angle. It’s a much more adult way of parting and leaves everyone with some dignity and very much fits with her new persona. A messy break up is very love island. I don’t think what’s in the tiktok is at all concerning per se - but he does always seem so much happier when he’s with different people !!