“There’s the opposite of love at first sight. There are people walking the earth that the moment you meet them, you want to punch them and keep punching them.”
– Richard Kadrey, Sandman Slim
Some people we get along with directly and others we just want to punch the moment we meet them. The people you like and the people you don’t like are either really similar to you or your complete opposite.
I think it comes down to that we like people that remind us about our good traits, and we dislike the ones that remind us about our bad traits.