Keeping in mind of course they’re all in their 60s and 70s by now. So they should be pretty well established anyway.
36 years in the first marriage, and 34 years in the second marriage.
Being an entertainer in the 50’s, 60’s and 70’s does not help him be a paragon of virtue, especially hanging out with Martin, Sinatra and the like. I have heard that alcohol may have even been involved.
Since I only have 35 years into my marriage I would hope that I could see 70 years of married life as he did.