Saying I cant handle this mentally taxing situation to your partner whos dealing with stage 4 brain cancer is fucking weak.
Im not saying mental health isnt important - but at that particular moment, someone who you supposedly cared about or love is dealing with literal death, you have to put your mental taxation on hold. Because either that person is going to live or die within a brief window.
You decided to date that individual prior to that diagnosis and then when it happens you dip?
thats part of committing to someone. And she should receive every bit of scorn that comes her way.