Greetings. You need to live in a separate residence, not simply stay overnight somewhere else. If you believe that living with your neighbor is going to work for you, then it would be a valid separation, even if you are going back to help with his medical treatments. My advice though is that you send him a letter detailing your intent to separate, where you are moving to, and when the actual date of separation will be. I would also mention in the letter that you are still willing to help him with his medical treatment, as long as he does not claim that you are reconciling by assisting him. Good luck.
Janet L. Fritts
Attorney with Rosen Divorce
4101 Lake Boone Trail, Suite 500
Raleigh, North Carolina 27607
919.787.6668 main phone
919.256.1665 direct fax
10925 David Taylor Drive, Suite 100
Charlotte, North Carolina 28262
704.644.2831 main voice
704.307.4595 main fax
The response posted above is based upon the limited factual information made available and is not intended as a full and complete response to the question. The only reliable manner to obtain complete and adequate legal advice is to consult with an attorney, fully explain your situation, and allow the attorney sufficient opportunity to research the applicable law and facts required to render an accurate opinion. The basic information provided above is intended as a public service but a full discussion with an attorney should be undertaken before taking any action.