Larry Time Travel AU

Harry is chosen among a couple of fine young men, to go back in time, more precisely 1952, simply to charm the, then very secrectly, gay, one and only rich owner of a company, Louis Tomlinson, who in the future, after his death, is discovered to have been gay. The purpose is solely to make Tomlinson to sign a document that would ensure his grandson (who's the inventor of the time machine) a lot of money of which Harry would get 10% out of 100.000.000 pounds. And that's a lot of money when all you've got is a pretty face.