Being The Bachelor isn't the easiest job in the world, however there are always some who become downright hated by viewers. Usually, if history is anything to go by, the most hated Bachelors are those who change their minds about their pick after the season finishes.
In recent memory, there was Arie Luyendyk Jr. who chose Becca Kufrin and proposed to her on the season finale. He later broke up with Becca (on camera) and went back to his runner up Lauren Burnham. The couple are now married, and have a daughter together, while Becca went on to become The Bachelorette and got engaged to Garrett Yrigoyen.