Today on a local NPR radio station, there was a panel discussing 'finding love' in your later years. They mentioned a lot of people aren't interested in wanting to fall in love after a certain age (mid-70s), and are content living alone or just having a 'companion' in their later years, after a divorce or death of a spouse. Many stay in a marriage they are unhappy with after 70, rather than even get a divorce (but they live like companions, not a married couple). Which brings us to John Davidson...
One of the panelists said she is very good friends with John Davidson (the actor / entertainer / TV game show host from the 60s - 90s) as he's been her 'summer neighbor' on Cape Cod for a while. She said Davidson, now 83, was in his second marriage of 40 years (his first ended in divorce), living a quiet life in northern MA / Cape Cod when he got a call that his younger brother died in Scotland back in early 2023. He hadn't been out to Scotland to see his brother in years, and knew since the last time he had seen him, he had gotten remarried to a younger Scottish woman. JD never met her before, but talked occasionally when he would call his brother on a regular basis. When his brother died, the sister-in-law called JD and asked him to come out there to attend the funeral, and help 'settle' some family matters - so JD went out there alone (without his wife or kids), and ended up staying for over a month.
When he returned home, he told his wife he had fallen in love - with his widowed sister-in-law in Scotland. He and his wife had been living as 'companions' for some time, and they didn't want to go through a divorce, in the past. These days, for the past two years, he spends part of his time in MA with his family of 40+ years, and part of his time in Scotland with his new girlfriend of two years, and everyone seems satisfied with the situation. She said he's pretty open about it in public. I think whatever makes one happy - especially late in life - is 'the secret of life' (as Streisand now says).
As a side note, I 'Googled' Davidson, and not much comes up about him or his current situation. According to Wiki, he's been married for over forty years (as she said), lives in NH (she said northern MA - close enough), yet no mention about him having a younger brother (sounds like he's an only child) or a romance in Scotland with his sister-in-law. But I don't doubt his neighbor's story.