Hayley Roberts and David Hasselhoff: 27 years
After two years of being engaged, Roberts, 38, and Hasselhoff, 66, tied the knot in July 2018.
Hasselhoff told OK! Magazine that he did have some concerns about their age gap when they started dating.
"For the longest time I didn't think it was right to marry Hayley as I was so much older and I didn't want to take away the fun and the youth and the excitement of growing old together and having children," he said.