Despite being an infamous love cheat, Sir Tom Jones would remain married to his childhood sweetheart for 59 years until her passing in 2016.
Melinda Rose Trenchard - known affectionately as Lady Linda - died in 1996 from cancer.
And the singer has revealed he has carried a lot of guilt for her death since.
Speaking to the Daily Star: "You do start to think, 'What if I had forced her to go to the doctors?'
"After I lost my wife, lyrics to a Bob Dylan song reminded me of her. It's called 'What Good Am I?'
"I was reading into the lyrics thinking, 'Jesus Christ ...was I partly to blame? Should I have woken up before?
"By the time we found out about her cancer it was too late. I thought, 'What could I have done?'.
“It started to mean more. So that song is very touching."
The 79-year-old admitted he needed therapy before he was able to perform his cover of the Bob Dylan song again.
He said: ”When she passed away it was such a blow. I didn't know whether I'd be able to do that song again.
"It was the one song I was scared of because she loved it.
"I had therapy in LA. The therapist said, 'Don't make any drastic moves right now, give it a little time'.
“I told her about the song and she said, 'That's the first one you should try. Get the one you're scared of over with'.
"I thought as long as I could channel it with balance then I could return to music. I tried it. I got some of my musicians together and that was the first step. And doing that really helped."
Sir Tom admitted he and son Mark were devastated by her death.
He said: "When something like that happens, it's so devastating you don't know how to deal with everything. It was something I'd never dealt with before.
"I'm human. We're all human beings first and foremost.
"When you lose someone that you love it can kick you in the...if you really love somebody and they go, that's hard.
"But you've got to try or you'll crumble completely and other people will suffer. You've got to think about your family as well."
