A Don't-Fear-the-Reaper Thing?

Strange story of the day, week, month, year.

A 30-year-old man lives with a 106-year-old woman. He lived with her and took care of her for nine years. She had no children and her husband died in 1970. They then sign a double suicide note and agreed to take poison. She couldn't swallow it, so the man strangled her to death and then took the poison.

Link.

Murder-suicide or double suicide? Why would a young man live with 106-year-old woman for nine years? What was his family life? What was his romantic life like?

If anyone sees follow-up stories to this, let me know. I'll keep y'all posted, if I see anything further.