On the surface, Louis Tomlinson, 27, and Richard Green, 83, don't seem to have much in common. Tomlinson rocketed to fame in One Direction, plays to packed arenas and has legions of fans. Green is a retiree who once worked as a taxi driver, an actor and served in the Air Force. But both love to sing and know what it's like to lose someone they love. Together, they checked items off of Green's bucket list.