GSF4 is one that took me a long time to come to terms with.
I tend to be the point of a lambda (Λ) in relationships. A and B like me; A and B hate each others’ guts.
Upside for me is a more diverse set of social connections.
Downside is that I’ve ignored, to my peril, when a healthier relationship earned me that another relationship was an unhealthy one.