When it comes to relationships, compatibility is one of the most important factors. It refers to the ability for two individuals to coexist with ease, share common interests, and complement each other's personalities. However, there are different ways of expressing the same notion. Alternative synonyms for "were compatible" include "got along well," "were harmonious," "matched well," "had rapport," "shared chemistry," "were like-minded," and "were in sync." All these phrases convey the idea that the individuals involved were able to establish a healthy and positive connection that allowed them to interact positively with each other. In a nutshell, compatibility is essential in fostering healthy and fulfilling relationships, regardless of its terminology.