You can like people that is very different in the surface but share the psychological matrix of values. It can be extraterrestrial that you will like him/her as old friends in an instant. On the other hand you will not like someone that has a subverted or inverse matrix of values. An example of the inverted values are the radical left describing conservatives. It's a fundamentally incompatible world-view, completely irreconcilable even if they are biological twins.