No matter what you are going through, always try and help people. So instead of saying “Fuck off” ask, “How can I help you to fuck off?”
I may not be much help in telling you what works. But I sure have fucked up enough to tell you what doesn’t.
Before sex, you help each other get naked. After sex, you only dress yourself. Moral of the story: in life no one helps you once you’re fucked.