All the answers to these questions will lead you to your answer.

What is the age difference between you?
What is your health and his health like?
Do you have debt or a mortgage?
Could you move somewhere cheaper or get rid of your car and walk to most places?
Could you sell stuff to add money to your budget?
Do you have extended family who will support you?
Do you have expensive taste?
Can you cut back and become extra frugal?
Have you done a budget for just you?
Do you have a other sources of income?
Do you have long term nursing care?