These are excuses. His parents aren’t deadly sick for 13 years and he is not so sick for 3 months that he can’t function. Just not happening. None of it is true. It is just not
I am sorry you feel broken but you’ll feel more broken if you carry on with this man any longer.
Have you tried to start a hobby? Something that could get you to connect to groups of people even in a limited fashion. Is there a class you can take? Yoga? Drawing? Pottery? Is there a book club you can join? Knitting? Join church choir? Attend church? Could you volunteer?
might be something to get you out of your house or even do in your own house? Good hobby could make all the difference. Much healthier than worrying about this man