I feel for her. In many ways she can't win.
She has to deal with the heartache of Joe not wanting her in the way she needed him to, but unlike most of us going through a breakup she's doing this in front of the world's media AND in front of thousands (and the whole of tik tok) every weekend.
An unwise, regrettable fling is something most of us have experienced, but again with a lot more privacy and fewer reminders. She has the added pressure of being someone who has this reputation of being unable to keep a man/closeted lesbian and so she probably does feel pressure to prove people wrong. As much as we want her to be healthy and honest, nobody really wants to watch her sob every night.
Someone said up thread that she could have any man she wanted, but I don't even think this is true. Partly due to her reputation, the song writing about partners/exes and the fact that she's basically a massive deal. Some pop stars can and do fade into obscurity, but she never will. She will always be Taylor Swift. Martin from accounts isn't likely to be able to deal with that. Plus, unless she finds herself a mega famous, multi billionaire, whoever she is with will probably be much less famous, wealthy and successful, and like it or not, a lot of men would find that emasculating.
She might have known Matty before, but it's not like they were always in each other's company in the past. She may well have thought of him as edgy but she maybe didn't have a clue about the controversial stuff (I didn't, I just thought he looks grubby). It's not like it made front page news before.
If Tree has been advising her then she's pretty bad at her job. If she hasn't then she's pretty bad at her job. If Taylor isn't listening to her then what is the point of her role?
I also wonder (and this isn't related at all really), but does the steer for all these versions of albums and songs come from Taylor or her record company?