To me it seems obvious that it's about a guy who has a close friend/girlfriend who is really sick, possibly facing a terminal illness and he doesn't have the heart to tell her that it is indeed that bad, he wants to be there for her, but he can only do so much and he doesn't want her to be scared saying that it's ironic the things you're scared of before facing something of this nature.
To me it seems obvious that it's about a guy who has a close friend/girlfriend who is really sick, possibly facing a terminal illness and he doesn't have the heart to tell her that it is indeed that bad, he wants to be there for her, but he can only do so much and he doesn't want her to be scared saying that it's ironic the things you're scared of before facing something of this nature.